Forget about willpower. It's time for why-power. Your choices are only meaningful when you connect them to your desires and dreams. The wisest and most motivating choices are the ones aligned with that which you identify as your purpose, your core self, and your highest values. You've got to want something, and know why you want it, or you'll end up giving up too easily.
When you've prepared, practiced, studied, and consistently put in the required effort, sooner or later you'll be presented with your own moment of truth. In that moment, you will define who you are and who you are becoming. It is in those moments where growth and improvement live--when we either step forward or shrink back, when we climb to the top of the podium and seize the medal or we continue to applaud sullenly from the crowd for others' victories.
In all areas of your life, look for the multiplier opportunities where you can go a little further, push yourself a little harder, last a little longer, prepare a little better, and deliver a little bit more. Where can you do better and more than expected? When can you do the totally unexpected? Find as many opportunities for 'WOW,' and the level and speed of your accomplishments will astonish you... and everyone else around you.
When you define your goals, you give your brain something new to look for and focus on. It's as if you're giving your mind a new set of eyes from which to see all the people, circumstances, conversations, resources, ideas, and creativity surrounding you.
You get in life what you create. Expectation drives the creative process. What do you expect? You expect whatever it is you're thinking about. Your thought process, the conversation in your head, is at the base of the results you create in life.