WyrdWoman - I had a close friend who referred to that in times of need

Nicely put I must say, even though I never liked the book (sorry! I know it has a fanatical following, but just wasn't my bag...)
QUOTE
but some have their roots deep in the psyche, and will not go quietly.
Ah, HR, when I scanned the post I thought you were talking about the person in the guise of shaman there, not the fear

Equally as true

The bring-it-on side of me says go for it! Tear yourself apart and come back the stronger. My alter ego agrees with HR - prepare yourself, think dead carefully about what you're getting into and book a month off. If you do it properly, not just sitting around on the couch eating chocolate and watching Dr. Phil, you can really hit a break point. It will change you, it will change a lot about you - you will need emergency recovery time immediately after and it will take a few months, possibly longer, to know your new skin. Possibility also exists not to be entirely successful and to end up a bit of a half-way crumpled mess that needs a lot of counselling. Can happen.
Can. Worms.
Preparation is key. One or two very strong and extremely healthy friends of the occult persuasion also recommended incase things go wrong.
Space, both personal and geographical also required.
When you take on a project like this what you may well prepare yourself is to confront your own fears. What people rarely ever expect to confront is their own ego.
In daily life your ego acts as your protector - it fields harmful attitudes, vibes and what knot. It is your guardian so well disguised you don't realise it's there.
In rituals such as the one you're talking about - your ego becomes your enemy. So ingrained is its job and so second-nature are its abilities that you must literally fight to disarm it and it will try and step in at every turn. Unless you can disarm the ego you will not face your fears in open combat and, like a badly pulled tooth, parts of the root will remain leading to potentially long-term psychological problems.
This again is why experienced friends (no more than two) are necessary - because they can separate the you from your ego and slap you back to sense when you're flopping about on the floor. They need to be strong, no-BSers. They won't be present at the time but you'll probably need them afterwards both in recovery or head-fluck mode if it doesn't turn out. Two is a good number so you don't bore the one to death - they can take it in turns

Hine touches very briefly on Madness and Mystical Journeys in Oven Ready Chaos, but the one you'll probably want to read is an essay called Howling in Aspects of Evocation - both to be found
here.
Good luck and gods bless. Let us know how you go.
Marion.