There are a lot of mental illnesses (did I spelt this right?) which aren't noticeable and even untreated let you live a "normal" life (whatever a normal life is

There are a lot of mental illnesses (did I spelt this right?) which aren't noticeable and even untreated let you live a "normal" life (whatever a normal life is). I'm diagnosed with ADHD myself. I'm not on medication or treatment and while my attention span is somewhat weak I learned to live with it and find ways to accomplish things. Working in a field I find interesting, even when everything seems to be interesting for me, helps.