The most important rule is: Never diet! Set realistic goals for how to change your eating habits gradually and permanently. Make a commitment to brush your teeth immediately after dinner to prevent later trips to the fridge.
Positive thinking makes life easier, but the key to success is discipline. Fortunately, one can practice discipline by training one's willpower.
Explore more quotes
I have several books I can read over and over. With fiction, it's 'The Stand' by Stephen King, which is my favorite all time. I read that at least once a year, the version which has 100,000 extra words, which is like the director's cut and unabridged. I love the story. I love the social connotation to it.