have the world on a string

To feel happy and confident that everything will work out in one's favor or that one is in complete control. I got a great report card and then found out I got into my first choice school—I feel like I have the world on a string! Betsy is such a talented singer that I'm sure she'll have the world on a string one day and be courted by record execs. Samantha landed her dream job after finishing at the top of her class in college. She really has the world on a string!