You could distract yourself by diving into other people at work. Get to know them laugh a little with them ask how someone is doing how the weekend was how are the kids etc etc etc.....get them to do all the talking then you might be more comfortable in the office and won't feel so alienated......also have little totems with you that make you feel at least a little good inside like a funny photo family picture a quote or something like that. That way when the day gets to you you can glance at it and have at least a moment of feel goodness.