The Paradox of Karma

I wonder if many people have really ever thought about the idea of Karma. The way that I have always understood it, when you did something selfish, insensitive, rude, cruel, mean, or otherwise unkind you will accumulate “bad Karma.” On the other hand, when you do things that are kind, considerate, selfless, caring, loving or otherwise “good” you will earn “good Karma.”