Be gentle to all and stern with yourself.
You never know what motivates you.
It's always too early to quit.
Who seeks shall find.
The most effective way to do it, is to do it.
By failing to prepare, you are preparing to fail.
The secret of getting ahead is getting started.
If you're going through hell, keep going.
To know oneself, one should assert oneself.
Things do not happen. Things are made to happen.
If you decide to design your own language, there are thousands of sort of amateur language designer pitfalls.