Lots of good advice from people. Good luck on the journey. I am sure your family supports you.
Since an average homebrew is somewhere around the 220 calories range, that equates to running about 1.5 miles. If I don't get out and 'earn it', i.e. above and beyond a normal day of activity, then I don't get any.
I make sure I go several days in a row without one, like a 4 days on, 3 days off, so that it is not a habit or a crutch, instead it is a real treat when I crack one open. I also figure if it isn't in bountiful supply, then I won't feel the need to keep consuming it. I do have a 'pipeline', but not several kegs and not several cases. I probably have about 36 bottles from my last 2 batches, and I know that my next batch will be several weeks before being ready. That keeps me in a conservation mode. Same method with having potato chips, I don't keep bags of them in the pantry, so they aren't readily available if I need a snack.
One of the biggest changes my wife and I made was to plan our evenings after work around activities, not around restaurants or the food. Now that eating is not the goal of going out, the food is not the focus or the end point, we end up being much more active, losing weight, and feeling so much healthier. These days we go out to see things, do things, play sports, be active, etc. It isn't revolving around the food. Food is kinda like the need to fill up the gas tank in your car on a road trip, it is not the purpose of the road trip. I've taken that approach with homebrew, and I think I actually enjoy good quality brew much more, quality over quantity. When you limit your drinking or your food intake, the quality of what you do consume is much higher, and you do appreciate it more.