From a blogpost by Sir Richard Branson, 10/2/12, on starting a successful business:
"If you aren’t having fun, you are doing it wrong. If you feel like getting up in the morning to work on your business is a chore, then it's time to try something else. If you are having a good time, there is a far greater chance a positive, innovative atmosphere will be nurtured and your business will fluorish [sic]. A smile and a joke can go a long way, so be quick to see the lighter side of life."