Worrying about stuff is a normal, human trait. I do it, probably more than I’d care to admit. We all do it to some degree. It can be useful in the short term, helping us problem solve among other things.
But too much worrying is bad for our mental wellbeing. It sucks the life out of us. It robs us of our lives. A useful tool I’ve been using a lot is to write down everything, no matter how trivial it seems, that is worrying me. Then I work through my list, prioritising important stuff and relegating trivial stuff to a piece of paper that I burn.
I agree, some things that worry us won’t leave us alone, but there are things that we worry about that drain us and rob us of our mental wellbeing. These are the worries we need to let go of.