When I went to university I couldn't wait to get away from home. But after about 3 days when one of my flat-mates turned out to be pretty unpleasant I stood outside the door thinking I don't want to go in, I want to go home. Fortunately a 3rd year came along, could see the misery and took me away for hot chocolate and a biscuit.
Any suggestions for cheering up the homesick/ things that worked for you?