You are describing the hedonic treadmill. Essentially, you become used to your surroundings, and while they are objectively great, from the perspective of inside your own head, this is now normal and you / your monkey mind wants more. There have been a lot of post floating around the internet with various solutions, the most popular being Stoicism > Positive Psychology / Happiness research > Buddhism / Meditation. I'…
I'm in my 50's now, and when I was in my 40's, my life-situation allowed me to pursue a lot more outside interests and hobbies. I had a lot of different outside activities, and would go out after work 4 nights a week with something different.
A mass-layoff 5 years ago changed my circumstances in a lot of ways. I have another job - one that I love probably much more. But I relocated, and where I live now just doesn't have many of the same opportunities to do all the different things I used to do. And it's causing a lot of feelings of emptiness and burnout.
Since I work remote, I'm planning on another relocation.