cloth nappies - i bought lots for DS when i was PG & fully intended to use them (i washed them all in preparation etc). then we were given sposies for a NB...then DP's dad bought us sposies till DS turned 2. i used a cloth nappy once i was so disappointed in myself for not just telling people to not buy the sposies.
Sounds just like me, except the cloth didn't touch DD's butt even once

Other than that I dont think I made any rules, I just went in blind and did whatever worked and tried not to feel too guilty about it.