Unless you work in demolition, don't burn bridges.
Believe in yourself, even when no one else does.
If you want to double your success ratio, you have to double your failure ratio.
Mackay's Moral: If you are persistent, you will get it. If you are consistent, you will keep it.
The cost of praising someone is nil - but every psychological study shows the payoff is huge.
If you have no destination, you'll never get there.