Meditation.

      Best way to go about it is in a darkened room. Train yourself to breathe in through your nose slowly, then breathe out through you mouth in twice the time it took to take in the breath.  Such as, do an inhalation count of 10 in, then a count of 20 out. Some will say to hold your breath for a count of around four, but I have not found it to really be necessary.  But use it if it helps you.  Do this while gradually relaxing your whole body. Allow your thoughts to relax and shift. Once you are calm get rid of all thought but the thought forms you wish to focus on. I find the use of a pink thought bubble to work best.  But feel free to use any color or method that works for you.  Just use it to get rid of all the thought forms that you do not want or need in your meditation.   Fill it with all of the thought you do not want, then I push it so far away that you can not feel it's presents around you anymore.

       Once you have gotten to a perfectly relaxed and focused state you can start to tap into voices and spirits around you; even if those are just of your own mind.  You should be able to communicate with them, or just focus yourself in any other thought forms and work now in your concentration for you to use with out distraction.