You only ever deal with the energetic hand you are dealt. “You” can never fail, because you always only are what you are. Nothing you think or do is your fault – it’s just what is (or was) the case energetically. So don’t blame yourself and never see yourself as a failure in life.
Still, have the mindset of always trying to do your best. Even though it’s not really “you” doing it – if you still believe in this principle, energy will actually arise to move you towards doing your best. In essence, don’t use “being only what you are” as an excuse to be less than you can be. Give it your all.
And if you genuinely can’t do your best… It’s not your fault. But you should probably strive towards doing it. Pray for it, want it with all your heart. And if you don’t want it… It’s not your fault.
(Btw, in the same way, nothing good you ever do is thanks to you. Instead of priding yourself in doing things, be grateful that energy arose to make them happen. It wasn’t really your doing.)