Excellent post! The one thing I have to wonder is if there are those out there who can really separate themselves from their company's business.
I like to think of James Altucher's advice that you will be most happy when there are the fewest amount of people in your life who have the ability to create negative influences. In this case, having that investor mean so much to you that it has a severely negative outcome on your emotional well being is not worth it. I've come to realize that less stress is definitely worth more than extra income, in the long run.