If you eat chocolate on a regular basis because you work at the shop, then you know you don't have to have the egg today. You could save it for another time. I find I really appreciate a particular food much more when I don't eat it every day.
Here's a test, do you think you could take five whole minutes to eat that egg ? If so, then eat the egg. If you think you could inhale it like a Hoover, skip the egg. If you're ready to sit and savor the egg, have the egg. If you're just hungry and need instant gratification, no egg.
Enjoy one of these instead !