Let Yourself Go

To let yourself go means to stop caring about yourself and your outward appearance/hygiene, usually because of depression and/or a traumatic event. Typically, a person who has let themselves go will rarely if ever leave their house unless they absolutely have to, and as a result they will balloon themselves up to quite an unhealthy weight. Their confused friend(s) will often try to get them to come out of their shell, usually with no success.

I know that your mother was a very important person in your life, but you can't just let yourself go now that she's gone.

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