Call of Duty: Modern Warfare 3

I'm so used to manual aiming going back to Goldeneye days I can't break from the habit, but in this game I get so frustrated to get shot down by someone from a good distance who just points in my general direction and fires wildly, with auto-aim kicking in and catching my head after 2-3 shots.

How do I break my habit and is there a trick to auto-aim? A feel? Timing? Or just simply point and let go of the aim stick and shoot?

Every console shooter has auto-aim, including Goldeneye, its just very high in COD games.
You should still aim as normal.

auto aim by shooting at the enemy and keeping your sights on them until the fall down cuz then they died
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Steam/XBL/PSN: Link43130