Does autowriting attract all kind of spirits?

I was successful in automatic writing only 1 time after many many attempts. What I did was relax and let go off my thoughts and think blank or think of "nothing". After awhile, my pen started to have a life of it's own. I just held my pen as it doodled and doodled. I freaked out and I said STOP STOP! And then I let go of my pen. My sister had several successful automatic writing. They were all positive messages. We do not know where the messages are coming from. Whether its a negative spirit or a good spirit. You are just a channeler from the spirit world or another dimension when you guide it to write. I read that there may be times when you end up writing negative messages instead of positive ones. If you can't handle channeling negative messages, maybe automatic writing isn't for you. I will tell you that automatic writing is very draining, you spend your energy thinking of nothing and letting go off all your thoughts, you may even get headaches. You may be successful at 1 attempt or several attempts. Drink a glass of water after ending your automatic writing session to balance you out.