The key to breaking a chain is to think about each step and to think about how you could change the situation or what you do so that you avoid going to the next step in the chain.

Here is an example of trying to break each link in the chain:
Find the elements in the chain of events Consider your options to break the chain
Got up late and skipped breakfast Pack a healthy snack to have on the go
Missed an appointment - Felt stressed Take some deep breaths and re-schedule
Came home - Went straight to the kitchen Go for a walk until I am no longer stressed Go to another room, not the kitchen
Saw leftover fried chicken from the grandchildren’s visit - Ate the chicken Throw out all leftover food. Always keep some healthy snacks on the counter-top for easy access.