“Whatever goes around comes around.” Yes, it is the bottom-line of Karma. Karma is our action or deed; no matter how small or big. Whatever we do, has an objective behind it. Karma also deals with that objective.
If we do something good to others but it has an evil intention behind it, then according to karma, it is wrong. Likewise, if we make a mistake but the objective behind it is pure and pious, then karma treats you accordingly.
Let us take an example. If we steal a coin and give it to a beggar who is in need, the motive behind it is compassion. Here, the act of helping overpowers the act of stealing.
Therefore, whatever we do, it should have a noble intention behind it. It is what “Karma” teaches us.