Karma true or false

Karma is said that if you do something nice something good will happen to you. It also can go the other way around if you do something bad it can come right back three times worse. If you ever heard the phrase what comes around goes around. What that is refering to is karma. Karma can be both good and bad. You choose your own way wheather it be good or bad. Karma is what you make of your own life. Weather or not karma is real or not is another question. Some people belive everything happens for a reason. That to me is way different then karma. If you belive everything happens for reason you think everything in life that happens is suppose to happen. If you bive in karma the you belive the reason something happen to you is because it is something you did for the end result.