Destiny is a perception. Destiny is an escape for what wrong things you have done to your life. You do something consciously or unconsciously to create a situation for yourself. That situation compels you to go in a certain direction that you term as destiny.
You can definitely change that direction and of-course your destiny too. This is in your own hands, your own will and your own thoughts.
It needs efforts beyond body and mind to completely change that and put it in a different direction. Whatever, you are doing right now consciously or unconsciously, is creating a destiny for you. It is as simple as how much you have understood the perspective of your life.
If you master your body, about 15 to 20 percent of your destiny will be in your hands. If you master on your mind and thoughts, 50 to 60 percent of your life and destiny will be your way. Mastering over your life energies gives you 100 percent control over your destiny.
Watch this video by Sadhguru: