Depending on how much information there is I provide you 3 methods to alleviate your worries of possible loss of data;
1. Pen and paper, simple, easy. Not really suitable for large amounts of info.
2. Online storage. Put whatever doc/excel/such you have all the info in onto storenow.net, google docs, whatever. Both you can add passwords to. Write down the links, and passwords. Simple, easy.
3. Email the documents to yourself, one password, and if you put them in a folder with just that in it, you shouldn't ever lose it.