You have to choose your path.
You have to decide what you wish to do.
You are the only person that can determine your destiny.

You have to choose your own destiny.
You have to choose your own path in life.

To control your destiny you must decide the destination.

Life is what you make of it.
You have to decide what you want in life.

I am fulfilling my destiny.

It is possible for you to realise your dream as a scientist, you must be a passionate learner and curious enough to seek this wonderful career path.