In Feng Shui, there are Heavenly Luck, Man's Luck and Earthly Luck.
Nothing can be done for Heavenly & Man's Luck.
But you can tap on the Earthly Luck that is about 35%. So, that is when Feng Shui comes into play and change people's luck.
As long as you know when and time of your luck cycle, you will gain by doing things right as to get the best results.