John Carmack on Focus

Focused, hard work is the real key to success. Keep your eyes on the goal, and just keep taking the next step towards completing it. If you aren't sure which way to do something do it both ways and see which works better.

Focus is a matter of deciding which things you're not going to do.

Programming

Windows programming in C# is great, but hear the advice of programming greats, to understand why it is necessary to alternate technologies every once in a while.

"I am a big proponent of temporarily changing programming scope every once in a while to reset some assumptions and habits" - John Carmack, co-founder of id Software

"Low level programming is good for the programmer's soul" - John Carmack.

"You are only competent one level below your training" - Anon.