"It is not the critic who counts. It is not the man who sits and points out how the doer of deeds conld have done things better and how he falls and stumbles. The credit goes to the man in the arena, whose face is marred with dust and blood and swear. But when he's in the arena, at best he wins, and at worst he loses, but when he fails, when he loses, he does so daring greatly."——Theodore Roosevelt

So when you don't know how to challenge yourself, you should ask yourself: Who do you think you are?

Vulnerability is the birthplace of innovation, creativity and change. It is the accurate measurement of courage.