Interesting observations on the road blocks to creating in the book, The War of Art.
Go out to the library, or borders, barnes and nobles (or digitally) and buy this book - http://www.amazon.com/War-Art-Through-Creative-Battles/dp/04.... It's called the War of Art, and a really short read, 150'ish pages (but actually more along the lines of 75 pages). A friend of mine loaned me his copy and it's definitely pulled me up from the doldrums I've been in recently to get some perspective. I suffer from pretty much the same thing and succumb to that resistance, or what other people sometimes call the "lizard brain", in getting something DONE. It's HARD.
Honestly - just read the book. It'll help. I promise.