“Luck
is when preparation meets opportunity.”
Neil Peart
“Diligence
is the mother of good luck.”
Benjamin Franklin
“The
man who is intent on making the most of his opportunities is too busy
to bother about luck.”
B. C. Forbes
Good
luck is often with the man who doesn't include it in his plans. 
Anonymous
I
am a great believer in luck, and I find the harder I work the more I have
of it.
Thomas Jefferson
The
only sure thing about luck is that it will change.
Wilson Mizner
Fortune
brings in some boats that are not steered.
William Shakespeare