It's easy when you work from home. You don't need to dress up for work, and so you don't, you stay in all day, in PJ's or sweats sipping coffee.
It's a good life, there's no office politics, no commute you reflect as you sip your fourth cup of coffee for the day and wonder if it's still too early for a nap. You stop shaving, first every other day, then only whenever you remember, your new "time management" strategy, time saved shaving is time that can be used on projects. And bathing isn't so important, when you don't see people every day, and so you save time and money by not running the hot water.
The beard and hair grow longer, but you're not too concerned, you can get it cut the next time you're downtown.
And you love this working from home, no laundry for the dry cleaners, your schedule's your own, until one day you have to run downtown and you notice the homeless are guarding their shopping carts from you, are they afraid you might steal their bottles? And somebody you don't know offers to buy you a coffee, finally you run into an ex co-worker who stops you to chat, she's concerned, and you see yourself in the reflection of a window behind her, the uncomfortable realization growing, a painful flash of self consciousness....
You've let yourself go.