Joy is one word, but don’t let that fool you into thinking its a simple thing. You will find that your understanding of what joy means will deepen over time, as will your comprehension of how much is possible, how long it can endure, and how intense it can be.
Your understanding of your purpose is a naturally iterative process. With every additional example of the many experiences reserved for those who live intentionally, you will find that every piece of your life plan pulses into greater and greater richness. The meaning your life plan helps you encounter will deepen as you experience more and more of the intensity in life that remains permanently hidden from most people.