It took a considerable amount of learning in the ways of intentions and manifestations including like attracts like to understand the astral world.
If you believe that it is dangerous, then you gravitate situations to present themselves as such to you. If other entities try to enter your body, you can just tell them get the f*** out, and they have to listen because it's your energy that is linked to your body.
Almost as if anything can be a ouija board and dangerous without learning the right protocol. We are sparks of infinite creation, so theres no way to die in the astral either. Some souls forget that and allow themselves to be manipulated as a result.
My favorite technique starts with lowering the body's vibration with a specialized breathing technique. Put your right hand over your heart and breath in over 2 heart beats, hold your breath for 4 heart beats, then breath out over 2 heart beats, then hold your breath for 4 again.
Depending on your lung strength you can do 2 4 2 4, 3636, 4848, 5 10 5 10.
Consistency and not moving while being relaxed is important as well as not falling asleep. Then it gets to this point where you are feeling like u are shaking but not moving at all, and you start to feel your heartbeat over your whole body, by this point you should be relaxed enough physically to try any visualization techniques and your hand should be at your side and no longer over your heart.
although moving the hand poses a risk too because moving raises your bodily frequency and as a result, makes you have to take 2 steps back to take one step forward to get back to that level of relaxation.
Funny someone brought up the bit about how it could be dangerous: and I found this part from the book
http://www.robertpeterson.org/chap08.html
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EXERCISE 8
Resolving Fears
However frightening OBE-practice might be, the actual OBEs themselves aren't frightening. They are usually very peaceful and happy--not frightening at all. OBEs are only frightening to people who don't understand what's going on. Mostly it is fear of the unknown. Being put into unfamiliar surroundings with new laws, can be terrifying to anyone. But you don't have to be afraid of OBEs if you understand the rules. Rule #1: Your beliefs create your experience. Rule #2: Attitude makes all the difference. If you go into the experience with negative thoughts, your OBE is likely to be unpleasant. If you go into the experience with positive thoughts, your OBE is likely to be wonderful. Rule #3: Your body cannot be possessed by a spirit while you are away. I'll say more about that in chapter 26. Rule #4: There is no such thing as a "demon." I'll say more about that, also in chapter 26. Rule #5: You cannot get lost or lose your body. Rule #6: The only thing you have to fear is fear itself.
The exercise for this chapter is as follows: Write down a list of each desire, belief, fear and expectation you can think of. Of course, if you have a problem with writing, just running through it in your head will help.
First, write down your desires. Do you want to leave your body? Do you want to see higher truths? What do you want from this and other experiences?
Second, write down your beliefs about the out-of-body experience. Do you believe it is wrong? Do you believe it is a trick of the devil? Do you believe it is merely a dream? Do you believe there are demons or spirits out there to harm you? Do you believe hell and heaven are somewhere out there? Do you believe that demons or spirits can take over your body while you are out? Do you believe that the OBE is a sin in the eyes of God?
Third, write down your fears. Are you afraid of getting lost while out of your body? Are you afraid of spirits? Are you afraid of possession? Are you afraid of flying? Are you afraid of heights?
Fourth, write down your expectations. Do you expect to meet angels or spirits? Do you expect to meet other astral travelers? Do you expect to be weightless? Do expect to be wearing clothes?
Fifth, go through your lists and mark each item you don't "like." For instance, if you believe demons can take over your body while you are out, mark that item. When you are done marking your "negative" items, go through each of them and confront them in your own mind. Don't attempt to have an OBE until your negative items are conquered or at least under control. Once you have conquered your negative feelings toward the OBE, your worries are over. If you still believe in demons, you might just meet one. If you don't believe in demons, none can bother you. But until you resolve these fears, your experiences may be influenced by them.
Examining and conquering beliefs isn't easy. I don't know of anyone who is completely free of negative beliefs. But working on them is a step in the right direction. And just knowing that you're working on them, is usually enough to keep your OBEs wonderful and positive."
I do want to share that the exact excercise that led me to getting out was the yoyo:
"EXERCISE 9
Yoyo Visualization
This exercises uses imagination to create an astral swaying motion. Once created, you can latch onto the swaying and it will pull you away from your body. I've used this method to leave my body several times.
The exercise is this: lay down, relax completely and put yourself into a receptive mood. Next, imagine that there is a yoyo in front of you at eye level. Imagine the yoyo string is attached to the area between your eyes. The yoyo is weightless, so it doesn't fall with gravity. A real yoyo needs a pushing and pulling action from your hand, but this imaginary yoyo needs pushing and pulling from your third eye. With your imagination, push the yoyo down to the end of its string then pull it back to your third eye. As you work with the yoyo, try to work your way into a single- minded, focused state of mind.
With your mind, push and pull the yoyo about fifty times. Try to do this until your visualization is so real that you can actually see the yoyo in front of you. Don't try to count the number of pushes you give, because that may unfocus your mind and bring you out of the single-minded focus.
You may think it sounds silly, but it's one of the most successful techniques I've ever developed. If you can't visualize it clearly today, keep working on it every day until you can. When you are trying to leave your body there are very important key points to keep in mind, and one of them is realism. If you can visualize the yoyo with absolute realism, out-of-body experiences are a short step away. "
For me I made the yoyo into a wooden box, i concentrated on the size vs distance, and the realness of the color and grain of the wood.