Sadhguru
Why do I feel jealous of my neighbour or colleague who has more than me?
Wanting a little more than your competition
The more you have, the more you want, and you want to have a little more than them, the people you see as your competition. Your pleasure is not even in what you have; it is in what somebody else doesn't have.
You want to have a little more than them, that's all. Forget joy; your pleasure is not even in what you have, but unfortunately in what somebody else doesn't have.