I've had a bit of a break-through lately when it comes to DII drafts. For whatever reason, I had gotten into the bad habit of playing fewer and fewer lands as I tried to lower my decks' curve enough that I was making enough plays to keep up with the ridiculously fast Limited environment.
On a lark, I played an aggressive U/W Skies deck and jammed the eighteenth land instead of the Moment of Heroism I really wanted to play. I went 6-0 in games and swept the draft. I noticed that I was making every land drop when it counted, and playing a stream of threats that I could never have managed with only three or four lands in play.
So, for this tip, I turn to Gavin Verhey: