Not sure how long you have been in the job but I have learned that every 8 years people get in a down cycle. I have been there too and the only way to make it better is to focus on the things that make you happy. Then then that is set you work on small goals and build from there. It will turn me around fairly quickly. Bad news is that the cycles come quicker together as you age but they do not seem to be a deep. I have the best job in the world but it even gets me down too. Sorruy man hang tough and try to spend as much time outside.