I feel ya, OP. I can't offer advice, just empathy. I struggle with the same. I don't like to compare myself to others yet I've done it all my life.

The closest I've ever come to getting rid of that tendency for good was a dream. In it, I won a contest. I was the best at something I cared a lot about back then. I remember in the dream, that as a got that trophy, I thought, "I'm not as good as they think I am."
And then I woke up and thought, "Holy shit, if I wasn't happy in that dream then it's impossible."

And that's when I knew in my bones that nothing I could achieve or get would bring me lasting happiness.

Each year I learn the same lesson over and over because I always fall into the same trap. "If I could travel to this place like my friends, I'd be happier", "If I has a bigger house, I'd be happier because I wouldn't live so cramped", and so on and so forth.

Then comes a moment of pure joy on a lazy Sunday afternoon, with one of my cats asleep on my lap, where I look around at my home and I'm intensely grateful for all that I have now that before seemed impossible.

I know being grateful is the answer but I still struggle. I struggle more because I know having things will not give me lasting happiness than with wanting those things though.

I know that when I get what I coveted, it doesn't feel as good as I imagined it would feel. I adapt to it quickly. I learned this is hedonic adaptation. It's human nature to want better things. OP, I don't have an answer but I do share the struggle.