Should I focus on my present rather than my past to heal?
Here is where I disagree with it. A more wholistic, balanced approach deals more adequately with the past. This is especially true when there are unresolved developmental issues and painful memories.
Real healing takes place when enough attention is given first to unconscious processes, including the darker fallen side of human nature (Romans 3:23, Jeremiah 17:9). Feel, process - then let go.