Without reflection, we go blindly on our way, creating more unintended consequences, and failing to achieve anything useful.
I can't change the direction of the wind, but I can adjust my sails to always reach my destination.

The only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle.
I like to listen. I have learned a great deal from listening carefully. Most people never listen.
Reflect upon your present blessings, of which every man has plenty; not on your past misfortunes, of which all men have some.
The world is a looking glass and gives back to every man the reflection of his own face.
The greatest glory in living lies not in never falling, but in rising every time we fall.