That's an interesting article.
I wonder if I will try myself to get an OBE. I question the use of it, I have satisfactory knowledge of the afterlife, and honestly I am also scared that my body could be taken over by the wrong kind of spirits if I would succeed in leaving my organism.
Also, at present my focus is on making my body healthy by optimizing my food consumption.
Your spiritual body is the same as your physical body. So you don't do it for nothing. God had a plan to put you on this planet.

But considering the fact that you have to focus yourself on having an OBE then in support of getting it I thought affirmations could be a good help to get you on the way.

If I would want to have an OBE I could write and repeat affirmations like:

I want to leave my body.
Mogenblue, you want to leave your body.
Mogenblue wants to leave his body.

I am going to leave my body.
Mogenblue, you are going to leave your body.
Mogenblue is going to leave his body.

I am determined to leave my body.
Mogenblue, you are determined to leave your body.
Mogenblue is determined to leave his body.

Stuff like that in all kinds of variations up to a point where you would write stuff like "Mogenblue will have left his body".

If you do it on a computer you can change colors, sizes and typefaces.
Computer makes it ease to copy and paste, but you have to put your energy in it, otherwise it doesn't work. So to keep it interesting and alive I suggest to use your creativity and play around with parameters like colors, etcetera.

You can also use pencil and paper, but personally I would really prefer the computer. Which ever way you use affirmations, it is about content, repetition and variations on the same topic.
Use your creativity. Have a great OBE.

Good Article.
I have tried to achieve an OBE for awhile now. I am curious as to what you have experienced during your OBE.