Failed asvab and physical

I failed the ASVAB, and then I failed the physical. Is the Air Force meant for me or not? It seems like everything I do ends in failure. Now I'm stuck in this endless spiral of indecision about whether or not I should enlist. On the one hand, I really want to join, but on the other hand, I feel like I should just give up. Failing both the ASVAB and the physical was devastating and detrimental to my hopes of becoming an aircraft mechanic. Now I'm not sure what to do. I guess I'll go ahead with the waivers and retake the ASVAB. I really need some advice, or I'm stuck in this endless spiral. Should I join another branch?