In this interesting transcript of a talk given by Lama Zopa Rinpoche, he explains the qualities of a qualified spiritual guide, and the downsides of finding an incorrect one. He mentions:
Some wrong guides show a path that agrees with our delusions and makes our delusions and attachment happy. I’m not saying anger is happy, but the wrong guides show a path that agrees with our delusions and develops the delusions rather than decreasing them. That guide says, “Oh you can do this, you can do that, it doesn’t matter. You can do everything, all the actions of the delusions you can do,” and many people come, without any announcements in the newspapers or on the radio or television. Many, many people easily follow that guide, because he is easy to accept. It is a confused path, but people don’t feel this, due to ignorance. It is easy to listen, but difficult to understand this confusion.