More than they're ashamed of over-eating or buying pornography or missing a train, people are ashamed of wanting to change themselves. They fear they can't and that others will resent the attempt.
In regard to shame, I figured this out a few years ago and like to challenge people with it:
Most people want to be part of the 10% in regard to their health, success, happiness etc. but...they want to do what the 90% are doing. If you are unwilling to march to the beat of a different drummer, I am sorry to tell you that you will likely be much fatter and sicker than necessary.
In regard to resistance to changed, I like this quote: "Many would rather fail than change and succeed."
I am grateful for this community of those who are willing to follow the unpopular but very helpful guidance provided by Dr. McDougall, Jeff Novick, RD and others here.Isn't it great to be part of the 10%...or at least on the way to becoming part of the 10%?