Almost everything I've learned about business and relationships, I learned dealing drugs as a teenager. The following are some rules I (try to) live by. Thinking about expounding on each with crazy life situations (think Aesop's Fables on something). Interested in your thoughts:
1) Do NOT do business with people you do not like (respect; give you bad vibes; create any sense of fear; make you feel uncomfortable; etc).
2) Treat others generously, graciously, the way you want to be treated.
3) Sell a better product than your competitors.
4) Provide samples.
5) Word of mouth is your best advertising.
6) Don't gloat when things go well and don't dwell when they go horribly.
7) Know who to trust and trust those you know.
8) Forgive once.
9) Be on time.
10) Do what you say you're going to do.
11) Cash is king.
12) Threats never mitigate a hard situation.
13) Do not invest what you cannot afford to lose.
14) Things (cash and what it buys) come and go - experiences and relationships do not.
15) The bigger the risk, the bigger the reward.
16) A hard conversation is better than no conversation.
17) Pay attention to what isn't said directly.
18) Learn from mistakes.
19) Admit when you're wrong and apologize sincerely.
20) Take more of the blame when things go wrong and give more credit to others when they go well.