In fact, many of them are net negative. I was prompted in this thought after being sent this link to the London Mind, Body and Spirit Festival which takes place shortly. Most of the spiritual professionals who appear at these affairs in talks and workshops are just selling their wares. They are basically business people who have a talent for giving a spiritual presentation but they cater to those who seek spirituality as a lifestyle accessory or means to develop themselves. They are the psychics, intuitives, positive thinkers, motivational speakers, wellness experts and aura readers who offer a kind of therapeutic self-help for people tired of materialism or, since few of them actually renounce it, looking to expand their horizons a bit beyond materialism. I suppose you could say they are a stage to be gone through but you shouldn't need to experience that stage to realise the essential emptiness and self-indulgence of it.
I'm sure some of these teachers believe they are doing good and perhaps some of them are but in my opinion they are mostly leading people away from true spiritual understanding down one of the many blind alleys that the novice might encounter when he first starts to aspire to something more than this world has to offer. Anybody who makes spirituality their profession, other than a bona fide priest who anyway follows a vocation not a profession and is certainly not in it for fame or fortune, is either a fraud or, since most of them are not that, an opportunist or, best case scenario, on a low rung of spiritual understanding. Some years ago my guides informed me that there were many teaching half-truths at present and, though they were not all evil, they were not very evolved. I wouldn't say the picture has changed since then. I am not saying these people are evil but what they have to offer is a spirituality intended to make one feel good, and the spiritual path is not about making the earthly self happy and fulfilled or even loving and good. It has one purpose only which is to reorient the heart and mind to God.
So, are there no spiritual teachers worth following? It depends what you mean by teacher. There are certainly people from whom one can learn but the whole concept of a spiritual teacher is foreign to the West. It is imported from Eastern religion, the guru and so on, and therefore it is operating on a different sort of level. But even on that level I would maintain that the spiritual teacher role as it exists now exists as much for the teacher's sake as it does for the pupil. Certainly we can and should share our understanding but the spiritual path today is an individual path and all teachers can do is give us a push in the right direction at an early stage. Thereafter, we must form our own relationship with God. No doubt many teachers would say exactly that but often by their behaviour they encourage dependence, personality worship and idolatry. Nowadays the spiritual teacher is just another manifestation of celebrity culture.