You know that learning is a powerful thing to do every day. It broadens your view of the world, it sharpens your mind, it makes life interesting, and it makes you interesting.
To really learn is to follow through on what you are thinking. Whatever you are thinking, you have an interest in, and that interest is the pre-requisite of learning. Following through is digging more and more about that thing.
One way is by writing it down. Have a blog, a journal, a book, writes whatever you think inside your head. Dig. Repeat.