Writing Dismay

Why do we let stuff get in our way of productive writing? I had a teacher tell me that it's all has to do with one simple word-FEAR- False Evidence Appearing Real. Think about that for a moment. How many of us out there have had great ideas for something to write about, and we drop it in the waste can. Is it the fear of rejection, maybe we think we aren't good enough, the detailed work, or maybe it's the fear of success. We want to write something great whether it's fiction or non-fiction, but the first thing that pops in our head is- it"s not as good as Harry Potter and it"s no Strunk and White. We need to get rid of those thoughts that stunt the creative flow. Your passion is real let everyone else see it. I found a way to rid myself of this dismay-one day I took a trip to Barnes and Noble. I went to the bargain section, the part that has 3/$10 and skimmed about 15 books, by the time I was done I was convinced that I could write better then that. It was a beginning of ridding myself of this evil hindrence that kept magnifing it's self louder and larger everytime I wanted to create a prose. I had to put an end to it, well at least I tried. I still get the gitters-does it ever go away? Have any of you found ways to rid the FEARs that come with writing?