Problems are not stop signs, they are guidelines.
You never know what motivates you.
It's always too early to quit.
If you can dream it, you can do it.
Be gentle to all and stern with yourself.
Well done is better than well said.
Things do not happen. Things are made to happen.
Go for it now. The future is promised to no one.
Never complain and never explain.
The most effective way to do it, is to do it.
A man ceases to be a beginner in any given science and becomes a master in that science when he has learned that he is going to be a beginner all his life.