Eckhart Tolle says saying yes means surrendering to what is, saying yes to life and watching how it starts working for you rather than against you.

Surrendering to What Is… Your Life that is happening right now. We get no replays, no repeats. If we don't surrender to What Is Right Now, well, the chances are good that we will never pass this way in the exact same way or time ever again. Unfortunately, we cannot put an incredible sunset on an extended loop nor can we record it to watch at a time when we are not so busy. What Is is enjoying the moment at the moment. Simple enough. Being there in the moment.