How did I let this happen

Omg I weigh 19st 9lbs!!! It hurts to walk and everything squeaks when I sit on it... I feel DISGUSTING! I don’t know how I let this happen to myself.. I’ve got an addition to sugar and I can’t stop eating it... I just went for a TEN MINITE walk and I’m fucked! TEN MINS!!! How the fuck did this happen!?