What lies behind us and what lies before us are tiny matters compared to what lies within us.
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
Do not follow where the path may lead. Go, instead, where there is no path and leave a trail.
You have brains in your head. You have feet in your shoes. You can steer yourself any direction you choose.