If you are feeling stressed, overcommitted and worn down, I am going to encourage you to take a look at your schedule and, more importantly, how often you are saying "yes" to things out of obligation, guilt or fear.
In the end, this "just say yes" approach is not an easy concept to live out on a day to day basis, more of a continual journey, but it has the potential to open up worlds upon worlds for anyone keen on saying "yes" for the first time, and every time after that.
You are about to embark upon one of the great journeys of your life. There will be obstacles, hurdles and perhaps some bumps. But there will also be independence, freedom, empowerment and the opportunity to experience life in a new way.