Don't know if someone has already said these but...
"Courage does not always roar. Sometimes courage is the little voice at the end of the day saying I will try again tommorrow"
"Maybe we like the pain. Maybe we are wired that way. Why do I keep hitting my head against the wall? Beacause it feel so good when I stop!"
"Every scar has a story"
"Challenges are what make life interesting"
"We can draw lessons from the past, but we cannot live in it"
"Life can only be understood backwards, but must be lived forwards"
"If you find a path with no obstacles, it probably doesn't lead anywhere"
If the going is real easy be careful. You may be going downhill"
I have a bunch on my wall in my room but can't think of them. I'll write more later.