I cope by having read up all about it and exactly how it is and isn't transmitted, so I know that basically, so long as I take the following steps I am unlikely to get it:
1) Don't eat uncooked or ready to eat food (ie sandwiches) that have been prepared by someone else unless I know they have washed their hands properly.
2) Make sure my own hands are washed thoroughly before preparing or eating food and before I put my fingers in my mouth.
3) Avoid being in the same room as an infected person while they are vomiting (goes without saying for an emet really!)
4) If someone is ill in the home, to wipe down all surfaces with a 10% bleach solution, use separate towels and make sure I buy new toothbrushes if they were in the bathroom when the person was ill.

In reality, you could be in a room where every single surface is contaminated with norovirus but so long as you don't put your hands in your mouth, or lick anything then you won't get it. And also, I have cared for my son when he is being sick and never caught anything from him.

I did have norovirus about 6 or 7 years ago now, and I won't lie it was horrid and just as bad as I thought it would be, but it didn't kill me and I am still here to tell the tale. It was after having got it that I studied noro thoroughly to minimise my chances of ever getting it again! xx