To dream that you are in or walking through the forest signifies a transitional phase. Follow your instincts. Alternatively, it indicates that you want to escape to a simpler way of life. You are feeling weighed down by the demands of your life.
To dream that you are lost in a forest indicates that you are searching through your subconscious for a better understanding of yourself.
To dream of a forest fire indicates that transformation and regeneration is only possible through some hardships. Alternatively, it suggests that your anger is out of control; it is affecting those around you.