Well that's one subject I have some experience with.
I will offer three pieces of advice.
First I suggest you learn about non-dualism. If you come to understand it you will realize that what you think of as your "self", ie. your body/brain/mind is not your true self and your true self can never be a "failure" because that is a property and your true self is free of properties. I recommend Rupert Spira as one of the best western teachers of this philosophy.
See https://non-duality.rupertspira.com/introduction and his videos on YouTube. I think this is the underlying truth behind virtually all spiritual/religious traditions.
Second if you find non-dualism too radical a change in thinking for you to accept you might try stoicism. A good place to start there is probably the Meditations of Marcus Aurelius (a 2nd century Roman Emperor).
Third "failure" is a label that probably isn't very useful to apply to oneself. Many things happen in life that we have no control over. To a large extent it's a game of chance and for better or worse we live in a world that worships the winners and tries its best to forget about the losers. Hence blaming yourself for what you perceive to be "failures" has little rational basis and is typically not useful. However unless you can gain some distance from your thought processes (such as by following my first or second pieces of advice) this fact may be difficult for you to grasp.
I will offer three pieces of advice.
First I suggest you learn about non-dualism. If you come to understand it you will realize that what you think of as your "self", ie. your body/brain/mind is not your true self and your true self can never be a "failure" because that is a property and your true self is free of properties. I recommend Rupert Spira as one of the best western teachers of this philosophy. See https://non-duality.rupertspira.com/introduction and his videos on YouTube. I think this is the underlying truth behind virtually all spiritual/religious traditions.
Second if you find non-dualism too radical a change in thinking for you to accept you might try stoicism. A good place to start there is probably the Meditations of Marcus Aurelius (a 2nd century Roman Emperor).
Third "failure" is a label that probably isn't very useful to apply to oneself. Many things happen in life that we have no control over. To a large extent it's a game of chance and for better or worse we live in a world that worships the winners and tries its best to forget about the losers. Hence blaming yourself for what you perceive to be "failures" has little rational basis and is typically not useful. However unless you can gain some distance from your thought processes (such as by following my first or second pieces of advice) this fact may be difficult for you to grasp.