This is where I really had to explore deep with in myself.
I came to the conclusion that you can't base your drive on someone else.
When they drop out, you will get lost.
Drive has to be something deep inside.
Something that no one else can touch.
It has to be something very special to you, something to get you over and past all obstacles in life.
It has to be a priority over everything but not cast a shadow on your life.
It has to be your destiny. And you have to do everything in your power to fulfill your destiny.