After brain surgery, my life changed completely. My memory started failing; my cognitive skills were out of whack and thank God for keyboards because my handwriting was horrible( a slight tremble in my hand). I would attempt to study my Bible only to find myself starring at the same page, not accomplishing anything.
When you are living with negative thinking in your mind you will not be able to succeed in your life the way God intended for you to. All your efforts in life to do anything positive or effective will become very hard to achieve because of your mindset. Negative thinking causes just about everything in your life to be unstable, including your spiritual life.