Anita Bell's book is great. You have to take some of it with a grain or salt (seriously - there are some things that I will not do to pay off my mortgage a bit earlier) but many of the ideas that she has are wonderful. I do know someone who used her book as a bible and paid off their mortgage after about 4 1/2 years - but I feel that I made a contribution because if I hadn't paid for it every time we wouldn't have gone out for a coffee in that entire time that she was paying off the house.