Hi Tapioca- I am no expert and I love the idea of a Bariatric Therapist from @Jaelzion! She sounds like a pro. It also sounds like you are doing great and are at a healthy weight!
Like you, I've found myself snacking on more unhealthy things lately and a few tricks that have helped me include:
1) Going for a walk for about an hour. During this hour I naturally don't snack, and drink a full water bottle. Even if i don't want to go, I tell my self to do just 20min and I always end up doing an hour.
2) Paying attention to what I am craving when I snack- usually its salty or sweet/chocolate, so I've tried to swap for healthier salt/sweet (Salt- hummus & carrots, soup; Sweet- SF hot chocolate, protein hot chocolate, 100 Cal Chocolate bar, strawberries & whip cream)
3) I stick to an eating schedule, and eat basically the same thing M-F, so I don't get too hungry and don't have to think about what I am going to eat.
4) Sometimes I force myself to have a protein shake before a snack, and 90% of the time I don't want the snack after the shake.
5) I turn off the TV/regular shows and replace them with computer (unhealthy in other ways, but nonetheless), documentaries or books. I am easily influenced by what people on TV are eating. If they are having cookies, I want cookies.
6) Controversial but, I weigh myself everyday. It keeps me motivated. I know others say not to, but it works for me.
7) Balancing out an unhealthy day, with an extra healthy one. It was my Dad's bday recently and ya know what, we had cake, pizza & wine. I had a little of each. I think long term success includes balance. So, following a day like that (which is rare, but is life) I try to have an extra healthy few days focused on protein shakes & veggies.
Again, I am no expert but hope these ideas help. I know ideas from other members have helped me a ton.
Take care! You are doing great!