I do believe in destiny because sometimes there are things that are meant to happen. For example, karma, if you do something mean to someone, eventually it will come back to you; it mightn’t be from the same person you were mean to, but it will come back to you.
A good example is at school, if you abuse a student or a teacher, you will be punished depending on the severity of the abuse. Also if you are misusing some sort of equipment or material, you will receive consequence. I believe that some things are destined to happen, not always, but sometimes.