I find that a goal for exercise helps a lot. If jogging is your thing then sign up for a 5k(or longer if that's where you're at) and then set a goal time and training plan. Seeing improvement over time is what helps me. Even if I don't feel like I have control over my job or feel stuck in my career, I can at least improve my fitness. When I'm aimless in my fitness goals then I'm less motivated to do it and if I do get my butt off the couch then I'm less motivated to work hard while I'm training.