Everything I want

I feel like I have everything I want in my life – home, family, health, love, money, energy etc. I honestly have an amazing life when I take the time to appreciate it. I still always have this thought “but you should want more…look at this person, they have more, you could have more”. It doesn’t feel very good to think that, it takes me away from loving the life I have. Any suggestions how to get rid of that belief?