Which Hindu belief focuses on the effect of a person's actions in this and in previous lives?

The Hindu belief that focuses on the effect of a person's actions in this and in previous lives is called Karma. According to this belief, every action a person takes has consequences that will affect them in this life and in future lives. The goal is to accumulate good karma through positive actions and thoughts, which will lead to a better future life or even liberation from the cycle of rebirth.