This workbook is a companion to the online version of the Executive System Weight Loss program by Sean McNamara from www.LifeTending.net. It is also helpful for listeners of the Executive System Weight Loss program audiobook. The program utilizes our latest understanding of how the brain's executive function plays a role in appetite management. Managing one's microbiome, the gut bacteria, is also an important aspect. Finally, several behavioral techniques are recommended to build a lifestyle conducive to eating in a manner that prevents overeating, or eating unhealthy foods and sugars. This is a 5-month program, and the online workbook is a key part of maintaining one's daily commitments and behavioral changes. This workbook is only helpful for those who are actively participating in the online program, it does not offer enough information by itself to be helpful to a new user.