How much do you know? Is there anything that you are curious about, something you would love to learn about? Whether you realize it or not, you are learning new things all the time. Every day you learn about the weather and about the people you encounter. You learn things at your school or your work. You learn that you feel better when you exercise and eat well and that you feel worse when you eat only junk food. It is pretty amazing how much we learn without even trying to learn.
Do you rememeber when you were a child and everything was new and exciting for you? The smallest bit of dirt or seeing a new flower color could keep you busy for an hour. If you are old enough that you have forgotten your childhood, look at the children around you. See the wonder and curiosity that they live and learn with each day. Do you miss having that kind of approach to life? No matter your age, it is very possible to return to the place where you love to learn and experience new things.
Take a close look at your life right now. Are you satisfied with the things you know? Are you constantly expanding your understanding and your knowledge? If not, now is the time to begin. Perhaps...