Chilled, be prepared for some problems going to sleep at first, because your body is used to passing out rather than gently drifting into sleep. It might take a while to adjust, but the exercise should help.
You won't be spending on beer so treat yourself to some nice food or juices or whatever instead, so you don't feel deprived.
I strongly suggest you get some professional support if you think depression will be a problem. Maybe set up some appointments with a doctor or counsellor to talk about your progress and any challenges you're facing. And SR of course, lots of support here.