I am new to this forum and in the middle of bandster hell myself but I know what you are going thru.  Whenever I ever felt down or sad, I turned to my old friend food.  That is no longer possible for me, especially in the middle of only taking in full liquids.  I did expect to have some sad feelings about that but it has surprised me that it has happened so quickly and so strongly.  I have been trying to get out of the house more and go for walks like the others have suggested.  It has helped a little but I can definitely see in the future needing to see someone or attending some support groups.