@Darkling1 it's really hard when your appetite is affected by your medication, so step 1 is to speak to your doctor about changing your medication - especially if you're likely to be on it for a long time. Constantly battling hunger, or steadily increasing weight might not help your mental health in the long term.
I needed to lose a lot of weight for medical reasons and I found there were 3 strands to it: physical (how much I moved around), dietary (what I put in my mouth), and psychologically (how I approached it in my head).
Physically I just did a little bit more. I found a dance class that I liked, I walked to the swimming pool twice a week (then had a leisurely swim), I went for a 10 minute walk before breakfast, and before bed. I only did things that I enjoyed and that I thought I could keep on doing.
Dietary, I was extremely strict. Forget the "averge woman needs 2000 calories per day". If you're 5'2'' you don't! Find out your TDEE (it may be between 1300 and 1600 calories) and you need to eat about 300 calories less than than every day to lose about a pound a week. It is hard when you're not tall - a cinnamon bun at almost 600 calories is about 40% of my daily allowance, but for someone much taller it might only be 20%. Because of my health issues I cut out all alcohol, dairy, salt. I ate eggs, fish, meat, beans, lentils, lots of herbs for seasoning and flavour, lots of veg and salads, and pickles / fermented foods. Oils were olive oil, avocado. It was hard. I enjoy cooking so I saw it as a challenge to make tasty meals with lots of variety.
I also used a smaller plate and deliberatly ate small portions. To begin with I'd put a 'normal' amount on my plate and then take at least a third of it off (keep it for lunch the next day). That included cutting a third off a slice of toast and throwing it to the birds!
I stopped buying any snacks. I bought snacks for dh that I knew I didn't like (horrid flavours of crisps).
For the final stone I discovered a higher fat lower carb approach that really suited me. And which I found (mostly) sustainable once I'd lost the weight.
Psychologically, I had to get used to the idea that sometimes I felt hungry, and that my tummy rumbled. I would use that as a cue to drink a glass of water - it didn't stop me feeling hungry, but it did help me to stay hydrated. As I said above I had to recognise that the amount of food I could eat in a day was less than my taller friend. I calulated how much a slice of toast, or a mars bar, or a big mac contributed to my weight, and also howmuch pleasure it contributed to my life. Honestly the best slice of pizza is the first one, after that the pleasure diminishes. Ditto chips. I tried to eat mindfully, enjoying what I did eat and then really noticing when that joy started to get less - does the cold chip taste as good as the hot crispy one?
I was brought up to eat everything on my plate, not to waste food, and I had to change that thinking. If there's left over food do I put it in the dustbin, or do I put it in my mouth? A fish finger on the kids plate, a spoonful of apple crumble... Previously I would eat it all. Someone I know has the mantra "I am not the dustbin". Better still repurpose it into a meal for the next day maybe not the half fish finger