I actually agree with you. I'm exactly the kind of people that are easy to burn out. Your description 100% matches me. This is such a perfect match that I'll write it down and paste it somewhere.
I really really hate being bored. I do not have the will power to grit through a lot of things that many other qualified people can grit through (so this is conditional probability, think P(dropping college | getting pretty good grade first year)). I didn't fail high school -- I actually ranked some top 25% in my first year but dropped to bottom 25% at some point and barely dragged myself to median at the end. I didn't finish my first college. I got completely burned out that I got a zero GPA for one term (I didn't drop any class, I just sit at the finals and handed in empty). I did drag myself through the second college and a master with B+. But it took me a couple more years to get it done. Occasionally I'd drop all courses just because I don't want to do it. I never completed any hobby project. I bite my nails and fingers frequently from childhood. I just don't have the ability to walk through any medium-long term plan, and it's getting worse.
Well, not something I can fix quickly, especially at my age, so I'll drag myself along. I can see my son having some of the same attributes that I have. It runs in the family. I'm going to get some therapy.