[Kurn, son of Mogh]

Last night I was getting raised almost every hand before the flop. Blinds were 300/600 and I had only 8K and he had like 20K.

You don't have the time or the chips to try to outplay an aggro opponent here. You need to reraise/push with a huge range of hands. But if you let him steal even 1/3 of your chips you're dead.