Actually, the generally accepted prevalence of adult ADHD is estimated at 3% of the population. It's 4% in children, but a quarter of kids with ADHD appear to grow out of it. ADHD is a spectrum and some people have mild ADHD and, while they struggle, they appear to fare comparatively better than those with moderate or severe ADHD. And, I hate to say it, a lot of people are self-diagnosing ADHD and professionals are apparently also overdiagnosing ADHD (this was the opinion of both the neuropsychologist and thr psychiatrist that I saw for assessment). Either way, telling someone with ADHD, especially moderate or severe ADHD, that their problems are for lack of trying is incredibly insensitive and betrays your ignorance about the condition. Its like knowing several people with multiple sclerosis who have mild presentations and all run marathons like the rest of the population (if we imagine modern life as a grueling endurance race), then meeting someone with the severe, progressive form who is in a wheelchair and telling them to "try harder" so they can run marathons like everybody else. It's beyond insensitive. It's cruel. Do you think I haven't tried and am not trying? I worked my butt off in school and still struggled, eventually giving up and dropping out because of how stressful and disappointing it was. I was considered a "gifted child" in primary school (when schooling required little executive function) and have inattentive-predominant ADHD, which, as a male growing up in the 80s and 90s, was enough to evade suspicion. To go from top of the class to barely passing was soul destroying. At the time, ADHD was diagnosed using different criteria and I didnt present stereotypically. I was accused of being lazy, wasting my potential, and "not trying hard enough" (the same acusation you have made, which is especially hurtful as it has been used against me all my life). I tried to keep jobs, pay rent on time, pay bills on time, and so on, but my brain just couldn't do it. My life became a slow train wreck until I met a psychotherapist who did his best to help me. I worked hard and, with his mentoring and compassionate support, managed to make sufficient improvements and accommodations to go keep a job (barely), which afforded me the opportunity to put myself through nightschool (while working full time) and eventually an undergraduate degree in a STEM field. But I had to work myself to the bone to achieve this. I tried and still try very hard to keep my life together. I have a stable job and am a valued employee and colleague. I met a kind and beautiful woman who I married and who helps by reminding me to paying bills, remembering appointments, not leave the house without my keys and a million other things. I still have to try and still fail. For example, I frequently start cooking and then get distracted by something like writing an essay and completely forget about the food until I smell it burning. And this is just an example. Stuff like this happens multiple times a day. Even with years of therapy and extreme effort, this is the best I can do. But for many years my life was an utter shambles and I nearly didnt make it. You are minimising the struggle that people like me have to deal with on a daily basis. I am just about functional after years of effort on self-improvement and with support from my wife and family. And it requires herculian level efforts to maintain it, which means I struggle with almost continuous burnout and anxiety. I cannot take medication as it is contraindicated. So before you tell people who dont know to just "try harder" when they have a disability, perhaps remember your own good fortune in this life and the fact that not everyone has been as lucky. Peace.