BTW everybody, here's a re-post of my Huna Meditation guide. This is definately the easiest to get quick and significant results from in my experience, definately worth a try.

Instructions:

Sit somewhere quiet in a comfortable possition. I preferre cross-legged on the couch, since it gives all the back support and I can fully relax. But it's ultimately up to you and what makes you comfortable.

Now, calm your thoughts as much as possible, but don't beat yourself up if you can't, it'll come on it's own. Have no expectations, just appreciate what comes.
Look upwards, so you can see your eyebrows in your vision, and hold your eyes there. Focus on the point at the centre of your upward vision, then gradually shift your awareness so you notice your central and peripheral vision equally (but don't move your eyes to look directly at everything you're focused on.)
Now while in this possition, open your mouth and keep it open (comfortably, not wide). When you breath in, close the airway to your throat with the back of your tongue and breath in through your nose, getting full, slow, and deep breaths. When you exhale, breath out through your mouth taking twice as long as it took you to breath in. While exhaling, do a semi-loud breathing sound of "Haaaaaa" all the way out.
Repeat this without breaking the method, and you'll notice the effects relatively soon (like a minute or 2, maybe only 20 seconds). Your eyes may cross or shift in some way, mixing up your vision, which is fine. Don't worry about the results during the practice, just relax and keep going as long as you want.