A lot of people function just fine with one kidney, so why exactly does your doc say you need dialysis? Did he run bloodwork and didn't like the results? Can you give us a bit more information?
If you find you do need dialysis, the first thing I'd do is go to this website:
www.kidneyschool.orgIt's like taking classes about different aspects of kidney disease and dialysis. There are "modules", like chapters in a book, and you can read them online. It's very user friendly and was made for people who are in your exact situation. So, start there, and then come back to this site and we will do all we can to help out. We all understand how traumatic this can be.