At my age, 57, working out on a regular basis is so important for a healthy life style. I do 3 days or cardio, mostly cycling, and 3 days of weights. I also suffer from depression and I definitely feel better afterwards. And yes, there are days when I have to force myself and the occasional day where I flat out blow it off. But once you get into the habit you just do it. Kind of like going to work every day. If you miss a week though, having to travel or something, it is really hard to get back going again. So I'd suggest you get into that habit and just do it.