I get PEERtrainer's tip of the day in email and I often find them very interesting. Today's email said that daily logging of food is a key to successful, longterm weightloss. It doesn't matter how you do it, doesn't have to be fancy or calorie counting, just logging what you ate. It helps you from deceiving yourself and shows you your potential pitfalls. The email is posted here.
That reminds me that another thing they recommend is daily weigh-ins. They admit it's controversial but they find it works for a lot of people. I don't recall where I saw that posted, sorry.