I totally feel you. I absolutely think the lack of desire to do anything is attributed to ADHD and like you, I too experience constant thoughts of self doubt and question whether I’m really living up to my potential. It’s not that I settle for things because they are easy, it seems to be a combination of being unable to settle and be happy with anything at all-hyperactivity? A constant desire for change maybe… Things seem stagnant no matter how comfortable of good they are. Also always expecting more.. When in reality I know I have a pretty good life… Its better than its ever been I just can seem to wrap my head around that!
Meds help a little.. I’m not sure if what I’ve said will help at all.. Its just my long winded way of saying I feel the same way as you.