30 years old

When did I begin to feel like a nobody? When I was in my 20s, I was still allowed to take on new challenges, and I had time to think about my hidden potential. However, as one enters one's thirties, it gradually becomes clear that the pages that have not been rolled up are in fact blank. I wondered if my potential had fallen somewhere. I look at the results of the shutter clicks with this thought in mind, and feel the disappearance of possibilities without any real images on them. Then the inconsistent question of how I perceive myself, how others perceive me, how I want to be perceived by others, and how I want to be comes up. What do I want to do? What should I do?