Why, you do not even know what will happen tomorrow. What is your life? You are a mist that appears for a little while and then vanishes.  Instead, you ought to say, “If it is the Lord’s will, we will live and do this or that.”
(James 4:14-15)

One day when we look back, our lives will have passed in a flash.  Things that worry us today will be a dim memory.  I like thinking of my troubles (and my life, in general) as being as temporary as a wispy mist to be blown away in the first breeze.  Our problems will truly be gone some day, replaced by a sense of peace that is beyond my comprehension. 

The lot is cast into the lap,
but its every decision is from the LORD.
(Proverbs 16:23)

We may call it luck but it's God's will at work.  Everthing is under His control.