There's two things you can do.
1. Post hands on here so the regs can either confirm you are playing correctly and the victim of variance or (more likely) abuse the life out of you until you learn to play properly (in a friendly way). If you're unsure of this, try asking for help in the commue
2. Play more poker. If you get past number one and find that you are playing appropriately, then it's just variance, AA has to get cracked by 72 sometimes, well, about 12.8% of the time actually, so just keep plaing and eventually it will start going your way.
But in all probabillity, you are doing something wrong, and realising this may take you a while, but this is the place to do it. The only way to change is to read shitloads of the posts on here, learn the basics of the game and how to become a winning player, learn how to post hands correctly, and gradually start taking stacks.
The Beginners Digest is a great place to start.