I use my own version of mindfulness combined with listening to a didjeridoo meditation track and recent use of some power stones held in my hands for added focus. The didjeridoo tracks droniness has done wonders to focus my mind and drop it into a deeper alpha and sometimes theta state, probably as I am a musician by trade and spirit, and music has always been a way for me to regain centre and focus in my life (no lie, as a 6 month old baby, my mum would plop me on the couch in front of a videotape of ELO and various other bands to calm me down when I was upset and I would stay quiet and focused for an entire hour or more, pretty rare for a baby of that age!).

I know I'm starting to zone in when I feel my mind drop into a blacker void like state of thoughtless awareness and my eyes start involuntarily rolling back in on themselves. Sometimes I'm not as strict on myself during meditation if I'm having difficulty focusing and allow my self to go on a visual dream like journey triggered by the didgeridoo track I have playing, still a nice way to take time out from this crazy world.

YMMV of course... Peace and good luck with your meditation practice.