If you think you can do it, you can.
Do not weep do not wax indignant. Understand.
To know oneself, one should assert oneself.
The most effective way to do it, is to do it.
You never know what motivates you.
Be thine own palace, or the world's thy jail.
It's always too early to quit.
Expect problems and eat them for breakfast.
By failing to prepare, you are preparing to fail.
If you can dream it, you can do it.
While many hackers have the knowledge, skills, and tools to attack computer systems, they generally lack the motivation to cause violence or severe economic or social harm.