"The world is one's oyster" refers to a certain kind of
good situation. The entry in The Collins Cobuild English Dictionary (HarperCollins,
If you say that the world is someone's oyster, you mean
that they can do anything or go anywhere that they want to.
You're young, you've got a lot of opportunity. The world is your
The saying also implies that you won't have too many obstacles along
the way, and if you do encounter any, you will easily overcome them.