Failure won't kill you but your fear to fail just may keep you from success. Failure simply means there is something to be learned or another direction to be taken.
Ignore people's opinions. Don't let the noise effect your choices in life
The body has limitations, the mind does not. You have to be mentality ready to be physically prepared.
Your purpose in life should be to develop and become the kind of character and personality that earns respect, esteem and love from the important people in the world.