The most effective way to do it, is to do it.
Well done is better than well said.
The wise does at once what the fool does at last.
If you think you can do it, you can.
Be thine own palace, or the world's thy jail.
To be a good loser is to learn how to win.
If you can dream it, you can do it.
Go for it now. The future is promised to no one.
Always desire to learn something useful.
Be gentle to all and stern with yourself.
There are simply more young people than there ever were. You get this feeling of strength. Also, large numbers can be a drawback, making it difficult to lose one's anonymity.
Teenagers today are more free to be themselves and to accept themselves.