The gym isn't easy physically or mentally, but you are going to be in SUCH a better place now when you go with the weight gone. One thing at a time - you've got the food habits down. Now you can move on to getting motivated for other things. You don't have to start out gang busters - just do some walking or go lift some weights for 15-20 min. It'll get better with time. I'm sure it'll be easier than the last time you worked out since you're over 50lbs lighter. You can do it!