I usually withdraw to my "shell" , because usually my sadness is caused by external reasons (other people).
When I'm sad, company and support are much valuated
. In many cases I also appreciate intruding my boundaries in a playful manner. Caring and considerate approach with a twist of humour work. Positive vibes is what would comfort me
, even though I might llook like I want privacy (and most of the time think it is what I need, when it's in the contrary).