The best thing to do is to reorganize everything you have done. Build up a checklist that tells how to read into your files. This is what I do on regular basis. Once I create a file, I would add on top of everything a procedure listing step by step what is the purpose of creating such files and how to use them. I have lots of vacation days every year, I don't want my coworkers to get lost in my files. Even though I get someone cross trained to take over my daily responsibilities, I put sth in details to make sure my absence won't create a mess.
Attitude is everything.