Never focus on your need for business. Focus on how you benefit others. Present yourself as successful and competent. Build mutually satisfying business relationships in which everyone wins.
Never dump a lot of promotional materials on referral sources. Do not drop off a pile of your brochures, business cards or newsletters unless a person requests them. This is a waste of your money and time and is aggravating to those who must do something with the materials, which usually end up being thrown a way.
Never speak poorly of a competitor or client. Whoever is listening will wonder if they will be next.