Our prime purpose in life is to help others. If you can’t help them, at least don’t hurt them.
Don’t be a dick. Not many people are out there that genuinely want to help others. Now, I’m not calling people selfish but a lot of people look out for themselves. If you are in the minority and you enjoy helping people, but you can’t somehow, don’t hurt them. Don’t mock them or speak down to them. Don’t try and burn people doing business, it’s not ethical and karma will soon prick you right in the ass.