It's easier to keep the momentum on an existing success than to create a new one

We never expected Pocket God to be a hit (see my last point!). But we are sticking with it until the success dies down, if and when it does. We’re even looking to expand beyond the iPhone, and we’re adding different game mechanics that can take the Pocket God world to a bigger level. if you’re lucky enough to experience success as well, you should be doing everything in your power to fan the flames and keep the momentum going. 

Don't quit before you've fully realized your game's potential.