This week, I participated in an interesting discussion over at Cerulean Sanctum: Psychology a Pseudo-Science?.
In the end, I disagree with Dan's conclusions, but his is a voice that must be heard.
The psychologists I know study God's creation--the soul--and use the tools of psychology to bring people to God. They are much like the preacher of Proverbs who studied creation to learn about God from general revelation. Psychology is the application of wisdom--a God-given faculty of the human mind--to an understanding of the soul.
We do need to look to Scripture, absolutely, but this does not negate the need for intelligent, wise investigation of God's creation to the end of healing.
Give it a read.