Life is indeed a gamble, the ultimate game of chance, based purely upon having the ability to make the right choices at the right time. You never win or lose in life if you realise it is all just for the experience. Learn to create your own destiny, don't wait to see what fate throws your way.
Life truly becomes exactly what you make it. All the choices lead to the reality you are experiencing.
Destiny is variable, not fixed; it is forever changing depending upon your free will to make choices for what you want your life to be.
Life is made up of chances to make choices, decisions of what you wish to do; the accumulated result of those choices is what you call your life.
Our destiny becomes the accumulation of the choices that we make; the choices of which paths we took in life.