The world is (one's) oyster spoken language
If you say "the world is your oyster," you mean that you have or will have every opportunity or advantage needed to do what you like or go where you desire.
Unlike me, you are young, hard-working, and living in a wealthy family. The world is your oyster.
We spent a happy evening reminiscing about our old days living like the world was our oyster.
This expression suggests that success can be taken from the world in the same way that pearls can be taken from oysters. This idea was used by Shakespeare in `The Merry Wives Of Windsor': `Why, then the world's mine oyster, Which I with sword will open.' (Act 2, Scene 2)
If a person has the devil's own luck, he or she has extremely good luck.
A: Yesterday I won a $10 million lottery jackpot and today I won a car in a draw.
B: You have the devil's own luck.