How to cope with income disparity ?

I was born in a poor family with lots of domestic violence and emotional abuse. At that time, my only goal was to reach a certain income so that I can take care of myself and my family. Now, I am in a full time job, making decent money but when I look at people around me I feel sad. There are a few batchmates of mine who started business and are earning shit ton of money which I might not be able to see atleast in this life. There are few friends of mine who are in high paying jobs as well. I look at all these people and I feel sad. Some days it feels like I don’t have the potential itself to reach that stage. How do I accept this reality ? That there are people doing extremely better than me and it would be impossible to match them.