Perspective swings in long-term weight loss

I am about 25kg down through CICO and maintaining a caloric deficit. Physically, I feel much better and I do not regret losing weight at all. Mentally, though, my perspective fluctuates a lot. Some weeks or months, being in a deficit feels manageable. I eat foods I enjoy, hit my protein and fibre goals, eat out occasionally, and life feels balanced. During those periods, weight loss feels sustainable and almost normal. Other times, it feels unfair and exhausting. I feel frustrated that I cannot eat the quantities of high calorie foods I want, and sometimes I catch myself feeling jealous of people who have higher TDEEs. Even though I know logically why I am doing this, emotionally it can feel like a constant struggle. I remind myself how much better life is now. I am more mobile, less out of breath, clothes fit better, health risks are lower, and I trust my body more. I know this is the right choice and that I cannot go back. I have been losing weight gradually for about two years. A friend who started more recently and is on a GLP‑1 does not seem to have these mindset swings, which makes me feel a bit isolated, even though I know our experiences are different. I am currently in a good phase where staying in a deficit and going to the gym feels manageable, but this follows a period where I struggled to train or eat under 2000 calories. I will keep going regardless, but I wanted to ask. Does anyone else experience these mindset swings over a long term weight loss journey, and how do you manage them?