This was on my Starbucks cup today:
"The world bursts at the seams with people ready to tell you you're not good enough. On occasion, some may be correct. But do not do their work for them. Seek any job; ask anyone out; pursue any goal. Don't take it personally when they say "no" - they may not be smart enough to say "yes."
- Keith Olberman, broadcast journalist and host of MSNBC's "Countdown with Keith Olberman"
I think that's great wisdom.