my life's greatest desire

life is full of desires which everyone takes time and effort to achieve them.
i have many desires i want to attain. but the greatest of all is that someday in the latter part of my life as i think of my past and the life i spent i can say "my life is complete and fulfilled.
at this early point in time of my life, im already faced with many questions like "have i lived my life the way iwant?", "have i followed the will of god?"...