Ok in my recent test I lost many marks by not trusting my first instinct. I just argue with my first instinct and believe that the new thing is the first instinct. From next exam onwards questions I don't know(multiple choice) I'm going to trust my first instinct. Does this happen to you guys as well?

nope, i usually come up with two or three methods to attack the problem, mull it over for a few seconds and decide on the best course of action and go for it.

 

going with my 'gut' has never got me anything but a fail.

I only go with my gut, if I have no other insight into the problem. If I have any ability to reason the question out I will. However, if I have to give a blind guess I always go with the one that sticks out to me first. No idea why to do this however I have had numerous teachers and test professional say that its always to not second guess yourself, and go with your gut.