Go with your gut

What makes a person make certain decisions? Why do people, who supposedly have free will choose so wrongly so often? Even with good information and a belly full of doubt, a person will make a decision they know they should not be made.
Even in times when there was absolutely no doubt, i have still made a wrong decision. But it's those times when you know beyond a shadow of a doubt that you are making the wrong decision that you make the decision anyway.
Just throwing it out there. Wondering for myself. Hoping to make it stop...