Glad you're back!
Baby steps. If you don't feel ready to dive in and pick up right where you left off, at least make one change. Cut out junk or soda. Make sure you eat a fruit or veggie with each meal. Make it a goal to exercise twice a week. Whatever you think would be easy for you to start. It doesn't matter what change you chose, just start now!
Here's a virtual kick in the butt for you!