Individual growth or removing creative blockages can be achieved through stream of consciousness writing because when we keep our thoughts within the walls of our minds we tend to filter them.
This causes us to ignore what needs to be recognized and dealt with in order to progress, or it causes us to become stuck underneath the heaviness of our own issues.
There are many other benefits that can be found through the use of stream of consciousness writing as an individual tool.
Too often do we allow our minds to wander without acknowledging the power that our random thoughts may have upon our own lives, the lives of others, or the issues of the world itself.
Trust the power of your mind, it is relevant and useful.