we just need to be more patient, because that can't be changed overnight. On defense, Jeremy helps too much and gambles too much, that's actually low efficiency defense and energy wasting.
In Offense, he still picks up his dribble too early, or jumps into air without a target. Those are all bad habits, and can be corrected over the time.
Harden's FG% is down, and it has a lot to do with fatigue and defense concentration. Lin needs to take advantage of that, and be much more aggressive and consistent.
One thing concerns me though is, as many commentators pointed out in the past, Lin has to learn how to fall. He can't be down hard with back first, without any slide and roll. His body can't take that, if he wants a long NBA career.