People see something like this and say "wow, <basic human emotion/instinct> isn't doing anything for me, how can I get rid of it?" and it becomes a sort of self-gaslighting. You're worrying about the future because it serves a function, or has served a function in the past. Find out what it's doing for you, and figure out something else you can do instead. Or maybe come to the conclusion that it actually is helping you, and accept that part of yourself.

Maybe you can acknowledge your worry, and rather than ruminating on it and letting it eat at you, you can come up with a plan to deal with the thing that's worrying you. Maybe that plan is to wait until it specifically requires your action, and give yourself permission to not worry about it for now.