I'm sorry for getting triggered so much...Lately me too..
The only solution I know in this case is to try to compare yourself less to others. I know it sounds trivial but it's the only one I found that helped.
Of course, it's impossible to never compare ourselves, but if we manage to somehow focus more on ourselves and less on others, that helps.
Also I don't think you're dumb at all, based on your posts.
These are the lies we are hurting ourselves with...probably after being hurt by others peviously...

Still, I know it's not easy at all. I've just realised, while reading other replies in this tread that I've never let myself loose, I've never told myself that I don't need to be measured with the same standard as others who might be less sensitive, less prone to depression, anxiety and definitely less prone to get overwhelmed. I'm still struggling with this, I still cannot accept that I cannot or shouldn't be expecting myself to do the same things as they do, live the same life. Though lately I definitely can't measure up to these expectations.
I've always managed to keep up so everyone has seen me as very functional and most people didn't know about my struggles. Maybe this is why validation is so important to me, rather than some therapist trying to convince me that "you are strong, you can do it".
There is this need to accept where we are, I think.