Remember that no time is ever wasted that makes two people better friends.
Do you always want to be right or do you want to be happy?
You either make dust or eat dust.
Make allowances for your friends' imperfections as readily as you do for your own.
Commit yourself to constant improvement. Commit yourself to quality. Be persistent, persistent, persistent...and have a grateful heart!
Don't delay acting on a good idea. Chances are someone else has just thought of it, too. Success comes to the one who acts first.