Definitely correct. I think we should all learn contentment. Most of the times, greed makes us lose more than we could earn. I know because I experienced it myself. When I was still new here, I wait too long before exchanging my coins. Turns out those coins are already depreciating and has no more chance to depreciate. My colleagues were able to sell theirs at an amount thrice than what I got because I was not contented before. But I learned from that experience and became contented now of what I have.