..."But if you judge a fish on its ability to climb a tree, it will live its whole life believing it is stupid." Einstein's quote reminds us that it's silly to measure ourselves (and others) on inappropriate standards.
Everyone has a different ability or particular "genius". Often, comparing yourself to someone else's abilities might mean overlooking what it is you are naturally more suited towards doing. In other words, stop being a fish trying to climb a tree and embrace your fishiness. (Fish really do lend themselves to great quotes). Have you found your genius yet?