Hi, I also have trouble staying focused when meditating and was given the following advice: try to meditate for just a few minutes at first, gradually increasing the time, bit by bit. I try and apply this when I'm meditating, however I must confess, it's very hard! I think I lack the patience lol. I know it's not much but hope this helps.
For myself when meditating I like to play Mozart or Beethoven exceptionally quiet, light a candle for peace and then start counting my breathes, slowly I will feel myself sinking into meditation. It does not always happen right away, for some it can take hours just to get to the first stages of meditation. When going into meditation you have to be devoted to what you are trying to accomplish from it, if you are not devoted your mind will "want" to wander. But the manner in which you do it will be different for everyone.
I have just one breathing technique that works for myself, that would be to think of your aura all around you as your laying or sitting whatever position you are most comfortable in, then breath it in slowly so that you are absorbing your own good energy and then exhale slowly removing the bad. You are concentrating on your breathing though, what you are doing with your energy would be self consciously in the back of your mind.
I hope this helps as an aid, as i said before, techniques into meditation will be different for everyone.