Feel the whole universe in your head
First try your imagination with small things. Close your eyes and feel as if the whole space is absorbed in your own head. It will be difficult in the beginning. It is one of the advanced techniques, so it will be good to proceed towards it in steps. Do one thing. If you want to do this technique, start in steps.
First: while going to sleep, when just ready to sleep, lie down on your bed, close your eyes and feel where your feet are. If you are six feet tall, or five feet tall, just feel where your feet are, the demarcation. Then just imagine one thing: you have become six inches longer. Your height has lengthened, it has become six inches more. Just with closed eyes feel this. In imagination, feel that your height has become six inches more.
Second step: feel your head, where it is, just inside, and then feel that your head has also become six inches longer. When you can feel this, everything will be easy. Then you make it more. You feel that you have become twelve feet all; or, that you have filled the whole room. Now in your imagination you are touching the walls – you have filled the whole room. Then, by steps, feel that the whole house has come within you. And once you know the feel, it is very easy. This is just a training; so that you can feel whatsoever you want to feel. Your inner mind is absolutely free to feel; nothing can hinder it from feeling anything.
For three days go on feeling that you have filled the whole room; then for three days the whole house is within you; then for three days you have become the sky. First work with small steps, and then when you feel that you are at ease
Close your eyes and feel that the whole sky, the whole space, is absorbed by your head. The moment you can feel this, the mind disappears, because the mind needs a very narrow space. With such vastness the mind cannot exist; it simply disappears. In such vastness mind is impossible. Mind can only be narrow, limited. In such infinite space there is no place for the mind to exist.
And if you can work well through this, you can come out of your body very easily. If you can grow and become small through imagination, you are capable of coming out of your body. You simply imagine that you are standing outside of your body and you will stand – but not immediately.