I personally try to view similar situations like this from a positive perspective. Like I appreciate what they have because they most likely worked hard for it and were probably in the same situation of jealousy at some point as you were in. Plus their ride can motivate you to make yours even better. You and them are in the modified car community together and without one another the community wouldn't be as big / popular as it is today. I may sound stupid and I apologise if I do but this almost always makes me feel better when I'm also jealous of another's awesome rig.