It is a big and sad mistake to become jealous of what others have and of what others have done.
Read: I Samuel 18:7-9
7 This was their song:
“Saul has killed his thousands, and David his ten thousands!”
8 This made Saul very angry. “What’s this?” he said. “They credit David with ten thousands and me with only thousands. Next they’ll be making him their king!” 9 So from that time on Saul kept a jealous eye on David.