You know, the only thing that bothers me more than people telling me to 'not worry' is suggesting that I 'just relax'. Like that's going to happen :-)
What I have found, however, is being very active about doing something pleasant (such as a good book) or soothing (meditative breathing) does actually help. I think that is also why Christine's advice to keep busy is so helpful.
Thanking about you,
Maria