Asking a person how they know they are psychic can be a bit like asking someone how they knew they were in love the first time. The answers are elusive and tend to be different for everyone. Throw in the fact that many people who possess the less well known psychic gifts have no idea they even are psychic and getting answers becomes the impossible challenge.
So, rather than focusing on how someone knows if they are clairsentient or telekinetic - because, obviously, you know if you know things without explanation or can make things across the room move with only the power of your mind - let us turn our attention to those less Hollywood hyped abilities and first focus on some of the basic ways to know if you're an Empath.