How Do You Deal With Feelings Of Inferiority?

I ve no idea if this is trauma related or a result of trauma, but I have struggled with feeling "not good enough" for an incredibly long time, to the point of not putting myself forward for things and believing it when it simply wasnt true
https://www.myptsd.com/c/threads/how-do-you-deal-with-feelings-of-inferiority.49055/