Recently I've been back to school. Not studying but in a teaching capacity, as a vocal peripatetic teacher, and I'm loving it! Being able to pass on the knowledge you have about a specialist subject is one of the most gratifying activities you can do. It gives me the excitement back into music, into creativity, by being able to talk about your specialist subject and watch young people grow in their own knowledge, skill-set and enthusiasm for being creative makes me tick!
Try it for yourself. Find some way of passing on your knowledge to others; not only will it benefit them but you too! Give it a go