The key of course all falls into your draw, I have a bad habit of keeping bad hands, if your on the play you really should not keep a hand with 2 or fewer mana, Ideally you want 3 lands, a 1 drop and a 2 drop and then you should be able to fill in the rest. Every time I say, oh I can get there, I never do and I regret it and then start looking at the library at the end of the match and am like oh man, the next three were lands. I so would have had you...Whatever, you can't get there if you don't have it. So check your hand, make sure you're pile shuffling between rounds and you should be good, oh and remember what you sideboard, it always sucks to go into a new round and realize you didn't take out your sideboarded cards.
I'll update this post later when I can add my current mono-red aggro deck.