Anxiety about doing activity or something because I’m scared it will make me worse

I’ve noticed that often the thought of doing an activity is putting me in a stress state. Like I’m just constantly thinking beforehand, what if I make myself worse and undo any progress I’ve made. Is this my brain doing this because it’s in fight or flight? Or is it more personal anxiety/fear. If other people experienced it, what is the best approach to deal with it?