Single after 20 years and it sucks

I'm a 40 year old male. Been in a relationship for 20 years and it finally ended. A house, kids and pets just gone. As a man, how do you get over your world just crashing in an instant? I was not perfect but definitely did not see this coming. Sleeping alone has not been fun. Please leave the jaded comments. Real comments accepted. This is a rough place to be in.