KARMA
Karma means "action". The result of action is known as "Karma Vipakkha". Every action has a reaction.

Karma is not a punishment but is the natural result of actions. It is not administered by a Higher Power but is the natural outcome of one's action. If you do something that is bad, you feel remorse - your mind is disturbed. When you do a good deed, you feel a sense of joy and h
appiness

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Read the Teachers
Surya Das on Karma
Thubten Chodron
Stephen Batchelor an agnostic view (audio)
 Takashi Tsuji on Karma