QUOTE(Waterfall @ Mar 1 2011, 05:16 PM)
Draw, if you burn a sigil how do you cancel it if something goes wrong, especially if you've done it right and consciously forgotten the details?
A method I have been apprised of in the past but have not personally used is to create a sigil book, which is only opened in order to record a new sigil, ideally, or if some later work requires that a sigil be re-used in some way. This way all of the mystery and psychic tension of wanting to go back and go over the sigils again produces a kind of 'book of power' effect, whereby recording the sigil in the book becomes, in itself, and ongoing meta-sigilization process. And when a sigil has outlived its usefulness or gone wrong, you tear out its page.
However, ideally a sigil should be a one shot, one purpose deal. The strength of sigil magic is in it's fire-and-forget manifestation of individual intentions. You will not normally have multiple sigils that somehow interfere with one another. In OP's example, one sigil to improve a job condition, get a promotion, etc., should be sufficient, if executed and then forgotten.
I personally disagree with Draw's implied method of posting sigils around in different places, at least in this particular case. Other kinds of sigils for other more long-term purposes might be well executed in this way, but I find sigil magic to be ineffective when treated as a 'mass ritual'. The development of an egregore through sigilization and mass dissemination of that sigil can work, but assumes also that at least some sufficiently large group of individuals is able to recognize and name that sigil in order to give the growing egregore a hold in the cultural consciousness. For a bystander or stranger to view the sigil, even if they exert some psychic force, i.e. attention, at it for some length of time, is of no benefit or consequence to the function of a sigil in OP's specific case because the end function is not a shared function but a privatized and personal one. Thus there is an implied intention operating to shield itself from psychic influences aside from OP's.
I have found burning a sigil after the initial charging to be an effective way of banishing it from the conscious mind. In the case of keeping a sigil book, the sigil is recorded there after it is charged, never before - whilst it remains inert - either from memory or as part of the ritual and before burning/disposing of the sigil. Another method is to instead of burning the sigil, to place it in a small black box, with no explanation, among all the other sigils that have been used. The box then serves the same purpose as the book. In either case, usually no description of the purpose of the sigil is given, or if there is it is encoded in some way. The prime directive of sigil magic is that the purpose of the sigil must be obscured and entirely forgotten and, almost more importantly, to remain thereafter unreachable by the mind of the magician.