I'm a bit of a natural at empathy/mediumship (I believe they are the same) and precog. What I do when I get sick of it is what I call the "super shield". Basically, visualize all the ambient energy in a room drawing towards your body, and becoming at least a foot thick in a spherical shape. Visualize this shield turning opaque and white (or whatever colour symbolizes peace to you), and program it to not allow anything in. Unfortuanatly, if you are a psi/hybrid vampire, this can prevent you from draining energy unless you program the shield differetly. I still haven't really found an effective method though. This shield needs little to no maitenence, and the longest I left it alone was a full week. However, it seems to be hard to take down.