I like to tell the startups: We invest in people, so if you aren't taking care of yourself, then you aren't taking care of my investment. Big successes take a

I like to tell the startups: We invest in people, so if you aren't taking care of yourself, then you aren't taking care of my investment. Big successes take a long time -- Dropbox is almost seven years old now and still has a long way to go. If you burn out after a few years, it's unlikely to be good for anyone.