dealing with variance

One thing that sometimes I and most people have trouble dealing with is variance. This is because most people are used to having steady, guaranteed income from a job. Even an online business like a website you don't usually have 4 or 5 figure swings in the negative range on a daily basis. But for people with large buying power in the markets, it can occur quite often. I think the best way to deal with is to just remind yourself that it is normal, and also not to think too much of it.