A simple question.

Hi,
I'd like to know whether the following phrases are correct or not.

1) I wish that this madness stopped and people started to appreciate what they have, instead of greedily glancing at other's possessions.

2) I wish that this madness stops and people start to appreciate what they have, instead of greedily glancing at other's possessions.

3) I wish this madness to stop and people to start appreciating what they have, instead of greedily glancing at other's possessions.

Thanks in advance for your help!

#2 Is the best. I find no problem with "greedily glancing at other's possessions."

I would say: I wish that this madness WOULD stop and people would start to appreciate what they have, instead of greedlily glancing at other's possessions.

Because it is a wish that isn't carried out yet, you would say:

I wish that this madness would stop and people start to appreciating what they have, instead of greedily eyeing* other's {better=other people's} possessions.

*"Greedily glancing at" sounds awkward.

A simple question.

I wish that this madness *would* stop and people *would* start to appreciate what they have instead of greedily coveting another's possessions. 

You need the conditional in English for something that you would like to have happen. Subjunctive I think. And "glancing" is used to indicate a quick look at something. The word we use for "wanting someone else's property" is covet. We want to have it and we want them to NOT have it. 

Otherwise, fantastic work.