having good things happen to you by chance"I'm going on holiday." "Lucky you!"
The lucky winner will be able to choose from three different holidays.
[+ to infinitive] They're lucky to have such a nice office to work in.
He's lucky that he wasn't fired.
It sounds as if you had a lucky escape (= by good chance you were able to avoid something dangerous or unpleasant).
We'll be lucky if we get there by midnight at this rate (= We might get there by midnight or it might be later).