If you tie your success to only how well a company is going to do, you are setting up for fail (And feeling unlucky, and so slightly pissed off at work.). There are too many external factors deciding that.

I measure my success in many ways.

1. Do I havea loving family. Check.

2. Do I have fulfilling hobbies. Check.

3. Do I have enough money to fulfill my responsibilities and hobby, doing things I love. Check.

4. Do I have as much money as I would want to call myself successful. Not yet.

Tying my success to many parameters I can feel a little successful everyday, and continue to feel lucky, and continue to work toward what I would call a successful startup.