A list of things I would do if I knew I could not fail,

Write a novel
Snowboard more fearlessly
Get my Masters in Education
Tough Mudder
Skydive
Audition for a play or movie
Drive a motorcycle or dirtbike fast
Become a foster parent
Start a web-video series
Become a costume designer
Become a photographer
Learn sign language
Learn a second language
Play an instrument
Start or join a band


Now, that's not to say that I'm not ever going to try any of these, some I fully plan on doing, it would just be easier to get started if I knew I would be successful at it.