Here is a list to your question that I have that I refer to from time to time.
My favorite: When you can't have what you want, it's time to start wanting what you have.
When I hear somebody sigh, "Life is hard," I am always tempted to ask, "Compared to what?
When it is dark enough, you can see the stars.
When it's all over, it's not who you were. It's whether you made a difference.
When life knocks you down, try to land on your back. Because if you can look up, you can get up. Let your reason get you back up.
When patterns are broken, new worlds emerge.
When you have a sense of your own identity and a vision of where you want to go in your life, you then have the basis for reaching out to the world and going after your dreams for a better life.
When you were born, you cried and the world rejoiced. Live your life so that when you die, the world cries and you rejoice.