Most successful businesses are not the result of passion projects. OP's problem isn't that he lacks ideas (so he claims), it's that he has the common affliction of not being able to follow through on them. Even if we all want to be Steve Jobs, most of us won't be.

But we probably do agree that constantly comparing oneself to others is not good for emotional well-being.

My advice to OP: don't focus on outcomes (ie, 'this 22 year-old did X, why haven't I?), focus on the process. Your goal should be to each day do work and spend your time in a way of which you would be proud. Avoid the hot and cold cycle of overwork / burnout and procrastination.