It says that good health can sometimes be a matter of luck.

VOA: special.2009.09.16

but sometimes when I have a really good day and I'm feeling my luck is good,

有时候，可能某一天特别顺利，我感觉我这天的运气挺好的，

沉迷于彩票的人们 - SpeakingMax英语口语达人

Ernest Hemingway once said, Sometimes I have good luck and write better than I can.

NPR: The Enduring Depths of 'Old Man and the Sea'

Now it's, it's great that your relations are so good again but do you think sometimes it's rather bad luck on France?

BBC: Breakfast with Frost

Good point, Denmark has quality players on the rise, sometimes a national sides luck with players getting stronger at the right time helps.

FORBES: Dehli Serves Up Tasty Win For Denmark