I believe in giving credit to people where it is due. Don't let your ego come in the way and overlook other people's achievement just because you are too insecure about yourself.
That's why you can see some people try very hard sometimes to justify other people's success by saying things like, "Oh, he's rich because he cheats in business," "Oh, he's smart because he's lucky to have rich parents," "Oh, he got good results because his university has an easy marking system."
This is actually their way to console themselves as why they can't achieve what other people achieved. Or maybe they're just jealous. Instead of just acknowledging people's success, they choose this pathetic path.
True or false. It is easier to find friends who will be sad when you are sad than finding friends who will be happy when you are happy.
The Prophet p.b.u.h. explicitly told us that envy is allowed only in two scenarios; when seeing someone who recites Quran day and night & someone who is blessed with wealth and he gives it to charity day and night. And envy here = the desire to become like them.