You can try it once and give up or you can accept there are changes to be made and work hard to make those changes.
Yesterday I managed to forget have my breakfast pack again (2 weeks into my breakfast promise to my CDC) and had forgotten to replace the pack I keep in my car so couldn't even munch that. This morning the alarm went, I did my usual by drinking a pint of water and then went to the fridge and quickly drank my tetra before starting to get ready. This is totally against my nature. I have never bolted food or eaten first thing or seen breakie as desirable (unless I'm at a hotel then I can't wait to get to the dinning room!). I expect I'll continue to struggle with breakfast but all I know is that my 38 years of not having breakie needs to change. As my CDC said, waiting till I'm hungry only results in me overeating when I do get round to eating. So I need to eat small amounts regularly so I don't get hungry and then overeat as a result.
It's takes more than a day to change.