To be happy in life one needs not a reason to, because happiness is the reason itself..just be happy with or without a reason.
Don't do things to people you know who are capable of doing the same to you, do it to people who are not capable to return the same favor and treat..for this is genuine and true giving.
That which dies dies, because it has no right to live, when you cease to exist it's because you have no right and power to exist.