Sprucing up a CV

I applied for a job today. It took many many hours to spruce up the old CV which had lain forgotten in some dismal part of my computer's filing system since October last year, and then another hour and a half to cobble together a covering letter sounding convincing enough. I have major problems with CVs and covering letters, mainly along the lines of the whole "blowing my own trumpet". I pondered this to Steve, saying that if this was th job God wanted me to have, the one He's prepared for me etc etc, then surely I'm being a bit superlative by bigging myself up? To which Steve responded, we need to "big ourselves up" sometimes just to portray a more accurate picture of ourselves, because most of the time we play ourselves down quite a lot, in some form of trying to be more "humble". But going for a job, you need to be honest - which is a very fine line between being "humble" and being "proud". Or maybe true humbleness is just honesty of who you are and knowing your limits.