How do look at this positively? Is it just me and I'm I not ready?

Going into things sometimes, i just think and think and think. I think of the possibilities/scenarios that can play out and perhaps the general future of me and if those scenarios took place. Per example, I may be doing something with a new someone I'm meeting and think stuff like "What if they think I'm boring?" Or "What if they see something they don't like that they have yet to see and just decide to leave?"...or even "What if in a couple weeks they see something/this happens and they leave?"....theres obviously stuff/issues with me but what I want to know is if it's just that or like more than just that...or am I over analyzing? 🤔😅