In fact, it can be one of the great challenges in life. It means choosing to concentrate on what we have instead of what we lack. Commitment is the first step in allowing you to regain the positive feelings that you are looking for. Most of us believe that by solving our problems, or improving our relationships, we will find contentment, but this means that our happiness must be postponed until some future date when those conditions are met. Commitment is a step toward bringing that future to the present.
Happiness is the result of a decision to be happy.
I've made it to happiness land. Obviously, this isn't going to happen. Regardless of how good your life gets and how many of your dreams come true, you will still have to make the decision to be happy. You will still have to make the commitment. There is no way to happiness.