This article spells out some of the basic differences between various forms of secular psychology, and the perspective and approach of biblical counselling. He shows that although secular psychology is in many ways fundamentally flawed, biblical counselors can make use of things that secular psychology has recognized.
This article offers a definition of biblical counselling that shows it is not just in the domain of official counsellors. It can be defined as "a fluid event and process of a Spirit-empowered Christ follower providing face-to-face ministry of the Word to others."
Is it wise to seek counsel from your pastor? It is not only wise, it is a must, provided that the pastor is able to offer biblical counselling.