One mistake will never kill you. The same mistake over and over again will.
Good intentions aren't enough. People have good intentions when they set a goal to do something, but then they miss a deadline or other milestone.
Staying in touch with contacts is as important as getting them in the first place.
The quality of your life is determined by the quality of your relationships. The quality of your business is no different.
A student of life considers the world a classroom.
Don't fall in love with your wit. Your cleverly turned phrase may not, as you hope, show off how much gray matter you have, especially if the phrase is at someone else's expense.