I have not yet been faced with this situation but I (initially) liked the approach outlined in this post:
For my little girl, darkness was a room-sized problem with no definite form. My strategy was to divide it into smaller problems with definite forms and then address them one at a time.
However by the time I was finished with it I had questions and doubts about it. What if there was a deeper experience the little girl was experiencing? What if “dividing it into smaller problems” killed something that needed to surface? What does this solution express about our relation to fear? What is the little girl learning about fear? It’s great to be able to overcome fear, but shouldn’t we sometimes know how to listen to it? I am tempted to think of alternate routes … but I honestly don’t have any credibility to do that … I’ve never been in that situation.