lucky star
A certain star or planet which, by itself or with others, is seriously or jokingly thought to bring a person good luck and success in life.
John was born under a lucky star.
Ted was unhurt in the car accident, for which he thanked his lucky stars.
out of luck
Being unlucky; having bad luck; having something bad happen to you.
Mr. Jones missed his train and was out of luck in getting to the ball game on time.
All of the girls had dates so Ben was out of luck.
pluck up
To have (courage) by your own effort; make yourself have (courage).
In spite of failure, he plucked up heart to continue.
He plucked up courage when he saw a glimmer of hope.
To become happier; feel better; cheer up.
He plucked up when his wife recovered.
press one's luck
push one's luck
To depend too much on luck; expect to continue to be lucky.
Слишком надеяться на удачу. Дразнить фортуну.
When John won his first two bets at the race track, he pressed his luck and increased his bets.
If you're lucky at first, don't press your luck.
You've got your father's permission to go to the concert. Don't push your luck by trying to borrow his car!
Ты уже получил разрешение отца пойти на концерт. Не искушай судьбу, пытаясь выпросить машину.
run of luck
streak of luck
stroke of luck
A period of good luck.
I had a run of luck last Saturday when I went fishing and caught seven big trout within one hour.
screw up one's courage
pluck up one's courage
To force yourself to be brave.
The small boy screwed up his courage and went upstairs in the dark.
When his father came home in a bad mood, it took Pete some time to screw up his courage and ask him for a dollar.
take potluck
To share as a guest an everyday meal without special preparation.
You are welcome to stay for dinner if you will take potluck.
They were about to have lunch when he phoned and they asked him to take potluck with them.
thank one's lucky stars
To be thankful for good luck; think oneself lucky.
You can thank your lucky stars you didn't fall in the hole.