I have felt that way...then I see them from the outside looking in..they aren't so happy,
They go out into the world with painted faces and masks of smiles..Money is thier God..
I know Im poor, yet I am rich in Love from all those who care about me..I have things that cannot be taken away from me..and Im sure you do too..A sense of self worth,a self awareness,that you have so much to offer to the right person when they come along..most of all Respect for your self..I'll be willing to bet, some of the nice things they have thay didnt get doing the right thing.thier world is a dog eat dog world,trying desperately to hang onto thier jobs.Nowdays everyone in the workforce is disposable..keep that in mind,..I hope that helps you feel better.
You are not alone, I have often felt that way, then once you see how thier daily lives go,you will realize you are where you are because thats where you need to be..