My in-laws, amongst others, drive me crazy with their wastefulness and mindlessness. I try very hard to lead by example instead of preaching to them, but to no avail! People like them are just so wrapped up in themselves that they can't even seem to think about changing their habits, let alone actually doing it. I try not to let my opinion about them be affected by it, but its so hard. They are nice people and I feel bad for feeling bitter and resentful toward them because of their way of life. Any suggestions?