Routine. Routine. Routine. Being an entrepreneur, you typically don't clock in and clock out. We tend to be creative and our minds race with ideas. This could be an issue because there are certain things that need to happen each day to keep the business going.
If you have a routine that you follow everyday (mine is in the morning) you can make sure you get those things done. Only after that happens, you can allow yourself to be more adventurous.
As a entrepreneur, you answer to yourself. Make sure you take of the business so the business can take care of you.