http://www.reveal.org/library/psych/ithurts.html
"There is a grieving process to pass through. Whereas most people understand that a person must grieve after a death etc, they find it difficult to understand the same applies in this situation. There is no instant cure for the grief, confusion and pain. Like all grieving periods, time is the healer.
Some feel guilty, or wrong about this grief. They shouldn't -- It IS normal. It is NOT wrong to feel confused, uncertain, disillusioned, guilty, angry, untrusting -- these are all part of the process. In time the negative feelings will be replaced with clear thinking, joy, peace, and trust."