This document lists 21 life lessons about succeeding in life, relationships, and business. Some of the key lessons include: don't make excuses or be gutless; personal development should be a lifelong pursuit; the customer is always right so don't try to outwit them; choose your friends wisely; and take responsibility for your own life rather than blaming others. Money responds to those who see opportunities for service in challenges. Relationships can help one reach their full potential.