I get the "hide from everyone" times. Something that I do sometimes is take one day that I stay at home and do something I otherwise put off because of my busy life. By limiting it to one day (or some other time frame) I make sure there is an end to it. For some people that won't work, but for me a little indulgence takes care of my "aloneness fix" and gives me a chance to do something I want to do but never have time for.