Sleep paralysis

I'm on fire... again, I've had a sleep paralysis immediately after getting asleep. Now I'm quite sure that I can get it only if im lying on my back.

My vision was slightly distorted, like there was a cloud above me. It might have been a cloud of negative emotions which filled me before i went to bed. I could control only my eyeballs and intercostal muscles and I felt a huge fear paralysing my mind. I was afraid of my sailing hat hanging on the wall in front of my bed, which I was expecting to grow bigger... but it didn't. After some amount of time (seconds, maybe minutes) I seized the situation and started to think about getting into OOBE. I tried to roll out of my body mentally, as the first method I had recalled. It only exhausted me and woke me up. I was too tired to make another approach, so I gave up. I guess I'm still too nervous, it probably will take several attempts to do it properly and get OOBE.