I take Concerta (methylphenidate). It helps a little. The hardest thing is getting a job interview when your resume says "Company X June 1st - August 31st" over and over.

I started using "organizational systems" when I was very young. Lists, diaries, planners etc. I would put sticky notes on my bedroom door in elementary school to remind myself of things. My personality is quite shy and reserved so in school ADHD never caused problems. The stereotype is a loud child racing around the classroom causing havoc, not someone quietly getting lost in the ocean of their thoughts.

The inconsistency is one of the parts that gets to me. Yesterday I was able to study and work on side-projects pretty much all day. At the end of a day like that you start thinking "Maybe things are gonna be ok. Maybe I'm gonna get an ok job and make things work." Then the next day comes. Today I haven't been able to do anything, even though there's essentially no difference between the today and yesterday. How can you make a plan if you have no idea how much you will be able to follow through on your intentions?