Much of what everyone else is saying is right on the money, but in addition to that, try to always feel FREE to practice, rather than NEED to practice and give youreself some kind of treat, or fun thing to do each and every time. Relax and enjoy yourself in this part of the process. Don't limit yourself to all regimental with scales and exercizes, which are necessary to be sure. Make it your own, rather than external motivations. Have a little "dessert" with the meal to look forward to.