i usually find that shouting 'Come On' and 'Power' at regular intervals gets me where i need to be.
seriously though, all you need is to anticipate, carry your momentum, and generally not drive like a dick.
i had a 330Ci Sport which never got stuck in Scottish winters, despite the comments and naysaying.
inclines of packed snow could be helped by putting the handbrake on a couple of clicks, just to help the traction control.