Its pretty easy, I did it once. All you have to do is take a decent sized dump in a 10 gallon bucket and pour some steaming hot water in it. Pull up a chair right next to it and hang your head over the bucket with a towel draped over your head. Inhale, exhale for about 10 minutes. Keep going steady with this and you will start to see quite a few demons popping up here & there, you may be distracted by seeing ghosts out of the corner of your eye - but keep focused on the breathing, that's the most important part.