Oooo, no takers :-)

Okay, I'll bite...if I could not fail, I'd quit my day job and pursue my passions of art & writing. Immediately, my second thought was "how will I pay the rent and the bills?" Okay, censor in place. I would pursue my art and writing and be wildly successful! I would write a novel per year, a book of poetry every six months and while the royalties pour in and the book tours finish, I'd paint to my heart's content.

cure cancer

I could only answer such a question with the most deepest of contiplation, and have come up with this:
I would be GOD and I would put LOVE in everyone's heart.
Then I would remove everything that was BAD or EVIL in all mankind.
Then I would leave, because my job would be done, and you would not need me anymore.

give up.

Guess I didn't think hard enough...great answers.

I would ban horse slaughtering!

Fly

Nice comments, thanks for taking the time to answer!

For myself I'd go into business. Something that has different people coming in all the time.

I don't know if you'd learn anything without failure or have any concept of appreciating the hard work you put in to reach a goal.

But if I had to choose something, It'd be getting into film making and living in a remote cabin somewhere in the Yukon with a loved one.

never hang my head.

End suffering.