I read this book in 6th grade called Checkers, and this quote has NEVER left me.

"The life that we once lived so easily, so effortlessly, We lived it like we breathed it- in, out; in, out- not knowing that the time would come when every moment of our lives would be an effort, when we'd have to think about every step, every word, every gesture. Nothing's unconscious for me now, everything's self-conscious."