Meditation means: remain as relaxed as you are in deep sleep and yet alert. Keep awareness there; let thoughts disappear but awareness has to be retained. And this is not difficult: it is just that we have not tried it, that's all. It is like swimming: if you have not tried it, it looks very difficult; it looks very dangerous too. And you cannot believe how people can swim because you simply drown! But once you have tried a little bit it comes easily; it is very natural.