You don't have an age problem or a distractibility problem, you have an anxiety and neurotic problem. Who cares what other people are doing, at what age? There's always someone better than you. And almost everyone would rather be lazy, that's not unique to you.

Just work on your project and be happy with your accomplishments. Find something to give meaning to your life like volunteering for a charity. It's vanishingly unlikely anyone will care about your (or the vast majority of peoples') legacies 100 years from now. Honestly, just enjoy your work, help others, and stop thinking it's a competition.

edit: I'm significantly older than you, so 1) I have some perspective on this and 2) sorry if this was less sensitive than what your generational peers might say or lacked trigger warnings.