No motivation

I have lost every motivation to even try after I left my job, a business I poured in my blood, sweat and tears into and still got crucified for. Now I resigned, jobless and penniless and soooo unmotivated. All I want to do is curl up in my bed and just sleep. Things that excite me don’t excite me anymore, I don’t want to even mingle or socialize, I feel alone, no one to talk to, can’t even process my feelings enough to get it out. And the worst part is, my brother is the reason I quit and the business is a family business.