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In my personal experience the only way to make sustainable changes to your eating habits is to make gradual changes to your eating habits. This will be a major theme of my CR practical guide. My advice is to take a couple months to evaluate where you are before making any changes, then proceed to ratchet down slowly.

Sounds easy enough but that's not always the case ;)

CR is anything but easy, it's considered one of the most challenging diets there is. That being said, there are varying levels of intensity amongst CR practitioners. Eating 90-95% of ad libitum (As much as you want) isn't that challenging. I'm down to 64% ad libitum, and it's pretty tough. I know people who do less than 60%, they look anorexic.