Here are eight indispensible others I've found true over the years that are easy to remember: AABBWWKC stands for:
A - Have a great attitude.
A - Maintain a great attitude.
B - Be on time.
B - Be prepared.
W - Work a full day.
W - Work your territory properly.
K - Know where you are and know where you are going.
C - Take control.
If you do not succeed, it is because you CHOSE not to work all eight of these steps every day. And that's a fact.