You've got to think for a moment about how your actions impact other people and vice versa. For example, if you say, "This is my land, I'll do whatever I want

You've got to think for a moment about how your actions impact other people and vice versa. For example, if you say, "This is my land, I'll do whatever I want on it - it's my right as the owner of the property;" but you're dumping industrial waste into the stream that flows through it, then you're negatively impacting your neighbors downstream. The poor person downstream who has no clean water may be jealous of your fancy car and house, but chances are they are more concerned with how you've ruined their resource by your own greed.