What you do today can improve all your tomorrows.
Never complain and never explain.
Go for it now. The future is promised to no one.
Be kind whenever possible. It is always possible.
If you're going through hell, keep going.
Always desire to learn something useful.
I can, therefore I am.
Know or listen to those who know.
Things do not happen. Things are made to happen.
Expect problems and eat them for breakfast.
The capacity you're thinking of is imagination without it there can be no understanding, indeed no fiction.