"It's just a huge, huge milestone, and you don't take it for granted."
These scars act as badges of honor and signs of strength and survival.
Check out these inspiring photos and stories.
A heart transplant, favorite nurses and "not dying."
“When I was getting anxious or scared, Mommy would say ‘Go to your happy place, go to your happy place.’"
“The first day of school is much more than a milestone. It’s a return to normalcy."
Tammy and Carey told HuffPost that their biggest advice after 21 years of marriage is to learn when to "agree to disagree