Time only makes it that little more difficult to change, but it can always be changed, being the human mind. The problem is your expecting immediate results, and that is unrealistic. Healing trauma takes a good year, learning to manage PTSD takes another good year. There's two years... not two months, but two years. Not everything is about trauma, somethings are about once you look at trauma and understand it, time must be allowed for the mind to really allow it to sink in.