I just realized, I think I've already done a bit of focal meditation when I was a kid. We used to have little contests to see who could stare at an object the longest without blinking and I did it so long that everything around the object disappeared, i literally couldn't see anything other than the object. one thing though, rather than black, everything around turned white. I haven't done it in years though. I tried last night, (not a candle though) and I actually started seeing some really trippy things, like flickering in the walls, things getting glowing edges and such. So I'm trying again tonight.