Some people are born with the ability to see energy and Some well....are not. For those who are not, you have to learn how to open thing called the third eye. The third eye is located on your forehead, in between your eyebrows. If you don't know if you can see energy or not, it looks like a bunch of different colors composed of mainly the colors green (Ki), Red (Negative energy) and blue (Negative energy being recycled into Ki).  The way I opened my third eye is just by practicing to see energy and ki and stuff, and eventually you will see waviness or haziness.

One way to open your third eye

Visualize a glowing golden-white light surrounding you.  Breathe in this golden-white light until the inside of your head is completely filled with the light.  Exhale and with another deep breath, see the golden-white light gather like a thick, solid rope.  See and feel the rope of golden light go through your third eye.  See and feel this rope of light thread through your eye, going from the inside of your head, out into the room.  Breathe in and take the rope of light back into your mouth, and feed it through your third eye again.

You may feel a tinge of pressure as your third eye is cleansed and opened by this rope of light.  If your third eye has been closed for many years or lifetimes, the rope may feel uncomfortable.  Breathe in and out to ease any discomfort during this chakra-opening process.

When you feel guided to stop, visualize yourself exhaling the golden-white light into the room.  See your third eye's eyelid joyfully open, happy to be fully awake to the true visions that now guide you. and you can not see your third eye. but sometimes feel it! this does work!