hi uno, dont be scared, i had a Fissurectomy, and it has given me instant releif, i was in agony before hand, all day long 24/7, i can now sit, stand and use my bowel with no pain or tears.
as for my diet i havent really changed anything just extra fruit and i take slippery elm.
i hope ur op goes as good as mine, goodluck but i dont think u will need it, best thing i did :)