I believe fear and guilt are but emotions that we have that serve a TEMPORARY purpose. They are uncomfortable for a reason. They should alert us that (in the case of fear) something is amiss and needs to be immeadiatly dealt with (flight or flight)...
In the case of guilt, I would say that it triggers us to know we have done a major injustice that needs to be dealt with (take ownership of the fault, apologize, ask forgiveness and learn from your error).
To say they are 'negative emotions' to me makes them without merit. I believe they have a special purpose and that is why they are so painful. We are not meant to live in long term pain. It makes one over emotional and out of balance. If they are used as "alerts" they are benificial and sustaining to life and to relationships. I think that to carry these emotions long term lead to physical and emotional damage in the extreme.
LW