The problem is I'm having a hard time keeping me and my friends have constant meetings (once a week, for example).  When we do have meetings it is hard to keep concentrated on the game.  What should I do?

sounds like none of your friends are as interested in the game as you. maybe barely. maybe they want to do SW or marvel or something.

if you're all youngish, it could just be an alchohol and female anatomy distraction.

or perhaps the campaign should be played in 1st person instead of 3rd. add to that a female npc that would really, Really like them to go do something for her..

also, ive found board games to come in terribly handy. keep a few short playtime boardgames handy, one of the multitudes of risk for example, and start the evening off playing one. lets everyone chat about their week without interfering with anything. then go ok.. get your chars out.

*edit* wait a minute, you're 11? forget sugestions 2 and 3.. play marvel or something. and stop packing on the candy before sitting down.

We had this problem in the early days of a recent campaign with a group of 30-odd year olds.

The answer we came up with was this. Everyone turn up around 5-530pm, game starts at 6 regardless. If you're late, then your character is 'indisposed' for the entire session, there's always a plausible reason, so you may as well go home. That got everyone there on time.

No drinking or smoking before the game, but the best one was that if, say, 4 players started nattering amongst themselves about last nights footie results etc. the DM was still playing and took it to be that the characters were talking amongst themselves, and therefore anything nearby in the dungeon/ area would hear them and come to investigate - automatic initiative win apart from the players paying attention and it always took a couple of rounds before the distracted players realised that they had just lost x number of hitpoints!

This happened twice only. Then there was full attention for the entire game from then on.

We were only playing once a week for 4 hours (for 3 years), I can remember 24 hour sessions as a teen where we 'lived' the game and didn't break concentration apart from necessary loo/ brew breaks  and wow, summer holidays were a gift, starting play at 8:30, legging it home for tea at 5 then back to play at 6 till 10

It does help to have a DM that knows the tables inside out, can react to whatever you throw at him and can enforce his authority on the game. he DM is effectively god, and all the books are just a guide.