I know what you mean. I have had trouble like that before and you are not too picky. I struggle a lot and worry that others will not like what I pick out. But then there are times when a pattern just speaks to you and you know it is right for a certain person, then you have to struggle to find the right fabric. Wouldn't is be great to just have both happen at the same time and everything just fall into place.
Sometimes you just have to look through a lot of books and patterns before inspiration strikes.