Know or listen to those who know.
To be a good loser is to learn how to win.
Without hard work, nothing grows but weeds.
It's always too early to quit.
Begin to be now what you will be hereafter.
The most effective way to do it, is to do it.
What you do today can improve all your tomorrows.
If you're going through hell, keep going.
Expect problems and eat them for breakfast.
To know oneself, one should assert oneself.
A sense of duty is useful in work but offensive in personal relations. People wish to be liked, not to be endured with patient resignation.