A person who sets his or her mind on the dark side of life,
who lives over and over the misfortunes and disappointments of the past,
prays for similar misfortunes and disappointments in the future.
If you will see nothing but ill luck in the future, you are praying for such ill luck and will surely get it.
Positive attracts positive and negative attracts negative. So forget the bad days and do not live in the disappointments. Think positive and move on in life.