It means you’re human. You don’t have to start up the self-loathing. You had the expected result from losing weight — you found it again later.
And since you know you need to start over, you’re just 1 minute away from actually starting over.
You may want to tweak your plan so you don’t fall over the same exact way again. Or maybe not tweak anything at all.
Failing does not make you a failure. But winning does make you a winner.