When everything feels like a performance of your worth, even trivial tasks or errands become moments where you need to prove yourself.
Also try to pick up on whether or not vulnerability is difficult for you. At work and at home, we are subtly asked to put up strong fronts of high, expert functioning where all facets of life are concerned. The result is that we become reluctant to show any signs of uncertainty or emotional reactions to stress.
This can be even more pronounced if you have high expectations put upon you, or if those in your life already see you as high achieving. Are you trying to maintain your reputation of being a do-all hard worker?