"Evangelistic preaching has too often consisted of a prolonged appeal for decision when the congregation have been given no substance upon which the decision is to be made. But the gospel is not fundamentally an invitation to men to do anything. It is a declaration of what God has done in Christ on the cross for their salvation." - Carrick, IP, p26.
Especially, the more liberal we become, denying the truths of Christ's deity, physical resurrection, substitutionary atonement (which requires acknowledgment of our sin and sinful nature), and the like, the more the gospel sounds like nothing more than any other self-help tactic or "good" advice - which is actually horrible advice. That is not good news.