Journaling is very helpful for organizing your thoughts and subjecting them to conscious review. It can be harder to get a handle on them if they are unconscious and just bouncing around in your mind.

It may well be that nothing much about your life needs to change, or you may feel a need to take control of the situation by doing something for the victims or a cause to support. Either way, the process of documenting and organizing your thoughts in writing is extremely helpful.