To know oneself, one should assert oneself.
It's always too early to quit.
Never complain and never explain.
Either you run the day or the day runs you.
Go for it now. The future is promised to no one.
Quality is not an act, it is a habit.
You never know what motivates you.
Without hard work, nothing grows but weeds.
If you can dream it, you can do it.
Expect problems and eat them for breakfast.
Losing faith in your own singularity is the start of wisdom, I suppose also the first announcement of death.