The ADHD Field Guide for Adults

Cate Osborn, a Shakespeare-trained actress and Renaissance festival entertainment director, and Erik Gude, a former artisan pizza chef, are both adults with attention deficit hyperactivity disorder (ADHD), a neurodevelopmental condition affecting the brain's executive functions. After losing their careers during the COVID-19 pandemic, they became full-time content creators and advocates, co-hosting a podcast called Catie and Erik's Infinite Quest: An ADHD Adventure. Their guide, structured in an accessible Q&A format, draws on personal experience, community voices, and guest expertise to help adults with ADHD build practical systems for daily life. The book's recurring message is direct: Readers are not failures, and their struggles stem from neurological differences, not laziness or moral shortcoming.

Cate opens with a 2018 breakdown. Despite holding two master's degrees in Shakespeare, she found herself unable to memorize lines for two plays. A friend suggested she might have ADHD and scheduled the appointment she could not bring herself to make. The day before her thirtieth birthday, a psychiatrist who was also late-diagnosed with ADHD and depression confirmed the diagnosis in what Cate describes as a transformative moment of being truly seen. Erik was diagnosed at fifteen after an extensive evaluation that identified both ADHD and depression symptoms, but it took him years to understand that ADHD affected far more than academics, including his vulnerability to addiction.

Part 1 lays a medical and historical foundation. The authors define ADHD as a neurodevelopmental disorder present from birth that disrupts eight executive functions: impulse control, emotional control, flexible thinking, working memory, self-monitoring, planning and prioritizing, task initiation, and organization. ADHD has a strong genetic component and cannot develop later in life, though it often goes unnoticed until support structures like parents and teachers are removed, which is why many adults receive their first diagnosis in college or after major life transitions. In adults, deficits manifest not as childhood hyperactivity but as overspending, risky behavior, chronic lateness, forgotten obligations, and emotional volatility. The authors compare the ADHD brain to a manual-transmission car: It can do everything an automatic can, but the driver must consciously manage processes that others handle without thinking. People with ADHD also have measurable difficulty estimating task duration, recognizing elapsed time, and planning for future events. ADHD does not disappear with age but has what researchers call "heterotypic continuity," meaning symptoms change in presentation rather than resolving. A bonus history chapter traces ADHD-like descriptions from Hippocrates through the modern Diagnostic and Statistical Manual of Mental Disorders (DSM), arguing that the condition has always existed and that centuries-old stigmas still influence treatment.

The comorbidities chapter contends that ADHD rarely exists alone. Depression affects 20 to 40 percent of people with ADHD, anxiety affects about 25 percent, and binge eating disorder and bulimia occur at rates of 35 to 40 percent, driven by impulse control deficits and dopamine-seeking behavior. The authors draw a critical distinction between guilt, which is actionable because it concerns changeable behavior, and shame, which concerns identity and leads nowhere productive. ADHD and Autism overlap significantly, yet the DSM prohibited dual diagnosis before 2013, creating false dichotomies that persist. Cate discloses that managing her anxiety medication proved even more valuable than her ADHD medication, as most of her struggles turned out to be anxiety about her ADHD symptoms.

The chapter on physical effects covers hormones, sensory processing, and substance use. Cate recounts how the emergency removal of a twisted ovary caused a sudden hormonal shift that made her previously manageable symptoms catastrophically worse, eventually triggering her diagnosis. Research shows that hormonal fluctuations during the menstrual cycle, particularly the estrogen crash during the luteal phase (the late premenstrual portion of the cycle, roughly days 21 through 28), can intensify ADHD symptoms and reduce medication effectiveness. Roughly half of all people with ADHD will experience addiction in their lifetime, as chronically dopamine-starved brains find drugs an efficient but dangerous source of the neurotransmitter. Both authors share personal accounts of self-harm, illustrating how impulsivity and emotional dysregulation can establish dangerous behavioral patterns.

Subsequent chapters address coping and identity. Rejection sensitive dysphoria (RSD), a tendency toward extreme emotional pain from perceived rejection, affects up to 95 percent of people with ADHD and drives people-pleasing and risk avoidance. Common cognitive distortions, including catastrophizing, all-or-nothing thinking, and personalization, are named and discussed as a first step toward interrupting them. The identity chapter examines how race, gender, and sexuality shape ADHD experiences: Guest experts describe how BIPOC (Black, Indigenous, and People of Color) communities face underdiagnosis due to cultural stigma, historical medical mistrust, and implicit provider bias, while transgender and nonbinary people remain significantly underrepresented in ADHD research.

Part 2 frames asking for help and pursuing formal diagnosis as acts of self-advocacy. Cate initially resisted working with a collaborative writer on the book, viewing the need as proof she was not a real writer, before recognizing that accepting support was consistent with how many published authors work. The diagnostic process varies widely, from multi-month evaluations to a single clinical conversation. A medication FAQ section explains that stimulant medications increase dopamine and norepinephrine availability, non-stimulants work more gradually and may help with anxiety, and that medication failure does not disprove the diagnosis.

Part 3, the book's most practically oriented section, covers time management, systems, hygiene, eating, sleep, and household organization. Eleven scheduling techniques are presented, including the Pomodoro Technique (working in timed intervals with breaks) and the Eisenhower Matrix (organizing tasks by urgency and importance). The authors introduce the "Triangle of System Success": Any effective system must be sustainable, practical, and repeatable. Examples include finder buttons on frequently lost items, phone chargers in every room, and limiting dishware to the number of household members plus two. When systems fail, the authors advise treating the collapse as data rather than a personal failing. Up to 75 percent of people with ADHD have delayed sleep phase syndrome, a circadian rhythm disorder that delays sleep onset by two or more hours. Erik draws on his culinary background to recommend practical kitchen strategies such as placing perishables in refrigerator doors for visibility and keeping staples like tortillas and pasta stocked for assembling quick meals.

Part 4 covers work and money. The authors argue there are no inherently good or bad jobs for people with ADHD; individuals should evaluate roles based on personal strengths and preferred daily rhythms. Cate discloses compulsive shopping and massive debt, describing the cycle of impulse purchases followed by emptiness and shame, and connecting the pattern directly to dopamine regulation deficits. Strategies include removing saved credit card numbers from devices, restricting purchases to daytime hours, and delaying purchases by preparing for an item rather than buying it immediately.

Part 5 addresses relationships, sex, and guidance for loved ones. Erik describes how his unmanaged ADHD caused repeated small injuries in his first serious relationship, ultimately leading him to end things out of guilt. The authors take a firm stance that ADHD is never an excuse for harming others. Cate, drawing on her credentials as a certified sex educator, argues that mainstream conversations about sex assume neurotypicality, treating brains without neurodevelopmental differences as the default, and leave roughly 40 percent of people with ADHD who struggle with sex feeling broken. The chapter discusses types of desire, strategies for managing distraction during sex, and the overlap between ADHD's need for sensory input and BDSM (consensual bondage, dominance and submission, and related practices). The chapter for loved ones introduces "task debt," a chain of prerequisite tasks that grows so long the person mentally defaults on the entire chain, and advises partners to identify and clear the blocking task first.

The book closes with an afterword encouraging readers to follow their passions, treat failed experiments as data, and practice self-compassion. An appendix describes common diagnostic tools, and the final line reiterates the book's refrain that readers are not fuckups.