I never feel I'm good enough, and if I had extra courage/confidence that my friends seem to have bags of. I probably would have done better at school & uni. Feeling to scared to ask for help in a class/lecture was the bane of why I only came out with a lower 2nd class degree.

I'm now in a low paid job in a shop (which I do love) but I have no motivation to move up or go for anything better as I don't feel I'm that kinda person.

There will always be people who are better than you. Always, and in every area of your life. So don't try to measure yourself against everyone.

I was a good pupil, a good student, and still, some people were better than me. In the end I just learnt something useful: I don't really care anymore about the results of others, but I care about what I think of myself. If I honestly think I did my best, well, that's all there is to it. I did my best, people were better than me, that's life. But if I know deep down I didn't do my best, I have reasons to be angry at myself.

I do the same at work, or at the gym: I just focus on my job, my work out, my results. For me it's the only way not to give way to doubts and self-deprecation.

Also, you may not have found something to give you focus or motivation.

Logic is power.

Knowledge is power.

Instrospection is power.

Thinking outside the box is power too.