I'd love tips for dealing with stress / emotional eating / vegging out in front of the TV. It's been my downfall for 15 years at this point. The advice of exercise is less appealing when you feel like a sloppy mess going for a walk
I think the biggest change for me is practising yoga regularly, it is like magic to me for mental and physical health and seems to help me have good habits in other areas of life. Also it's fun! Rolling up to a shoulder stand makes me feel like when I was clowning around on the school field at primary school.
Don't underestimate how good for you walking is. If nothing else try and fit some brisk walking into your day. Get audio books or music you like. Exercise that you enjoy and fits in to your day you'll be much more likely to continue. Try nd get nice comfortable clothes you feel good in and some good trainers.
Also allow yourself the odd treat and pig out, we are all human and after all, crisps are delicious. It doesn't matter if healthy eating is your norm. Make your meals absolutely delicious, a real treat to have- and quick for when you are busy. A lot of people find planning meals for the week helps. Learn lots of easy things to cook/put together that takes less than half an hour. Upthread I posted about a quick dinner which takes five minutes. I was on holiday a few weeks ago and enjoyed all the lovely carbs and wine and no washing up but couldn't wait to get back to normal eating as soon as I was home as if I go outside my "normal" eating for long say at Christmas or on holiday (which usually involves seven or eight portions of veg a day) I really miss all the veg and water and find myself looking longingly at salad!
I think it terms of regular vegging in front of the TV, you have to break the link with snacking every time you do it. By just not snacking when you sit there, unfortunately. But you could have a nice cup of tea instead. A nice cup of tea seems to stop me reaching for the wine, crisps, all manner of things, quite frequently.
Try and think why you are emotionally eating - is it work stress? I've changed jobs quite a few times to find something less demanding and stressful. Are there issues you want to talk through with someone? Counselling/CBT might be useful. I think for a lot of us, we were hopefully fed with loving intentions by our parents and so food just makes us feel nice and comfortable.