6. Do NOT be emotional.
Passion is great to drive your ideas and business. There is no doubt. However, you need to separate the emotion from the business. I remember my first love and how head over heels I was. When we love someone or something we tend to throw everything we should do out the window and we listen to our hearts, not our heads. I am a romantic, so I believe a degree of this is awesome when it comes to personal relationships. But NEVER business. Not thinking with a clear head because of your emotional state only leads to bad things in business.