PLEASE GIVE ME SOLUTION ON THIS.

I feel stuck in my thoughts—I think clearly in my mind but struggle to express myself. I often feel confused and unsure about decisions. Even though I know I need to think and act maturely, my behavior and mindset still feel childish. At 22+, I wonder why this is happening. Is there a reason behind it? Handling relationships with friends and family feels difficult. Is it due to stress, or is there another reason? I struggle to be the mature person I want to be, and in social groups, I often feel like an idiot. One unintentional action or word makes me look foolish. Why does this keep happening? Why do I struggle to make decisions? Is it due to fear or overthinking? Why do I always need someone to explain everything to me? Why can't I understand things on my own? Is there a specific reason for this? Can someone help me with a solution or recommend a book that can change my life and mindset? I want to think and act more maturely.