The best potential in us is extracted when we face trials & difficulties.

When I was in a comfort zone, I didn't have any life experience. I didn't grow, but after facing challenges, I discovered myself and who I am. ~ Benard Jester 

Challenges are one thing but adversity can be paralyzing. Lack of obstacles allows one to stretch freely and move in any direction. ~ Diana Serna 

Unless you're a mushroom, challenges alone will not help you grow. You need survivable conditions and assistance from those brighter than you. ~ Edward McCain