Shift your focus to include supportive behaviors that promote not only weight loss but the whole picture of health and well-being.
(By the way, this is what people are talking about when they say "sustainable.")
With a lifestyle that involves exercise, sleep, and practices for inner well-being and self-care, you will have a structure that doesn't crumble the moment something comes along to "throw you off your game."
Your health and well-being can become you favorite part of life.
The place where you celebrate being you.