The wise does at once what the fool does at last.
Be gentle to all and stern with yourself.
Well done is better than well said.
If you think you can do it, you can.
Things do not happen. Things are made to happen.
If you're going through hell, keep going.
After a storm comes a calm.
Do not weep do not wax indignant. Understand.
To know oneself, one should assert oneself.
Never complain and never explain.
I'm someone who's done the opposite of whatever the received wisdom is, to keep your career going into your 50s.