It looks to me like you already have the excercise thing going well as is. Unless you really want to, there's no reason to become an exercise fanatic. I've found they can become way too obsessive about it.
As to what you eat, I have found that rather than trying to dramatically change what you can or can't eat, by cutting out things you love, & then eventually "breaking" & binging on them, it's sometimes good to try changing one or two little things at a time.
For instance, you said you love milk. Almond milk tastes surprisingly like regular milk. It's even richer tasting than skim or 1% milk. But it has about 1/3 the calories, more fiber, less fat, more vitamins. More of the good stuff, but less of the bad. The one called "Original Non-Sweetened" is what I buy. It really does taste like milk.
Another is snacking. Evening snacking is my downfall too. If I have a bag of cookies, or M&M's, or ice cream, or anything else like that around, I will eat at least half of it in one sitting, if not the whole pack. Therefore, I just don't keep it in the house. If you're dying for sweets & don't have any around, you'll either find something else, not so bad, in the house or have to go out & get something. Personally, I don't want to go out & get it, so I eat what's in the house.
Another thing is the walking, although that's not an option here in the Winter. Rather than take up a new exercise routine, do something cheap that you can do right outside your own door. No expensive fees or equipment needed & you do it on your own time schedule. Walking is not only exercise, it also enables you to think things through. You can also look at & appreciate the little things in your surroundings. It can improve my mood dramatically, plus makes me feel better about myself having done something good for myself.
I decided on my color scheme for my siding & windows while walking & looking at the houses I walked past. I saw what did or didn't look right. You can get ideas for your yard too.
I've found that when I get home, I'm not really all that hungry. I have no idea why. I snack way less in the Summer.