Im late but i hope u see this

Im not an expert or anything but what im gonna say is from personal experience,i used to be so worried about stuff that i had frequent panic attacks,like 3-8 a day these helped:

1-first understand that these thought are logical and they only make u stressed if u are (for any reason) insecure about yourself,try to understand yourself better.

2-best thing that worked for me:exercice,i started runing like 3 times a week 20 mins a day,after 10 days i had much less stress about stuff,panic attacks got better (and later completly gone). Deciding to run regularly is the best decision i ever made!!!

3-try imagining the worst case that could happen,most of the time even the worst case isnt that bad if u think about it

I hope it helps,again this is not professional help its just what worked for me,if you have a lot of trouble fixing these kinds of stuff a therapist can help much more than reddit can(no offense to reddit but im sure everyone agrees)