There are many styles of meditation around at present which are based on older, traditional forms, and which will seem to be valid methods in their own right. But unfortunately, not all meditational styles are equally effective - or good for you.
The problem is that the brain is far easier to 'program' than you might imagine. After just a few regular periods of being held at one level of awareness (whether that's deep concentration while driving, or day-dreamy internalisation while you garden, or work on a factory line), that awareness can become ingrained into you so deeply that it ends up as one of your primary states of being. That isn't to say that you aren't able to be aware in any other way, but that it becomes a frame of mind that you tend to return to automatically without thinking. After more repetition, this state eventually begins to define you and, rather than it just being something that you enter into now and again, it stays with you and affects how you think and interact with the world for hours, days or even years. We can become ingrained with anger, or bitterness, grief, fear - and happiness too - in just the same way as we can our working state of mind.
It's obvious really, work for 8 hours a day holding your mind pretty continually this way or that, and it's bound to have an effect on your overall awareness. But it doesn't need long stretches of being in a single mind-set to create this effect, you can do it just as easily with overly intense meditation, done for just an hour or so a day. This means that the state you're reaching in meditation has to be right, or it can be anything from barely useful to downright damaging.
If you were, for example, to continually practise just the recitation of a mantra by itself, then it would lead to you staying permanently locked into the mantra state of awareness. This will tend to make you not just block unwanted thoughts as you might hope, like worries, but also unfortunately dull your more positive normal reactions too, like pleasure and well-being. You can't practice sitting holding your mind in one state for any length of time, then expect to feel the full effects of other mental states when you stop practising.
Becoming locked into the meditational mind, held with subtle control to prevent thoughts and in a state of contrived calm, is just as bad as being riddled with worries. It's not productive, and actively precludes anyone from reaching a state of peace. It can also lead to de-personalisation, a sense of separation from the world, and very few of the positive effects that meditation is meant to bring. Meditation is not meant to be about training yourself not to feel emotions, or reaching a permanent state of non-thought. If it isn't also practiced with all the other supporting techniques of relaxation, mindfulness and metta (being able to generate a sense of well-being and directing it at self or others), then the awareness that it will bring can be emotionally flat and internalised, and even lead to the practitioner feeling anxiety rather than peace and calm.
Practice any and every method of meditation with an equal amount of attention paid to:
1) Gaining 'mindfulness', a clearer attention to this present moment. This is to counteract the possibility of you locking yourself into in an internalised state.
2) Generating a sense of well-being (metta) towards self and others, which helps to counteract emotional flatness developing.
3) Relaxation, first and foremost. It's quite feasible for someone to sit and meditate for a lengthy session and hold onto their physical and mental tensions throughout - and to even increase these tensions. Begin every meditation session with a period of complete and total relaxation. If you don't have time to meditate, just relaxing is the next best thing.
Constantly evaluate your meditation methods, and think about the state that your practice puts you into, or risk wasting time and effort - and the possibility of negative effects.
Simon
