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.
Biblical counselling is part of obeying Christ's law to love one another. This article gives biblical grounds for the call to care for each other and how this is linked to the law of love.
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.