I don't ask for guidance from the gods as such, but then my box is a bit strangely shaped iykwim I tend to meditate on what I need, and put it out there without labeling a deity. I know plenty of friends that will do rituals around guidance (I have done them too) but I find for me meditation works best. Whatever you feel most comfortable doing is best, if it doesn't feel right don't do it. Or were you after a specific spell or ritual?