Go on a driving course... 
Without being funny about it likely to be the best performance improvement you'll make... I it has been for me...
....You beat me to it! That's exactly what I was going to post - Remap your brain!
Drivetrain with Big John is a good one - All day in your car in Oxfordshire.
CarLimits on North Weald airfield is another good one. These two are unrelated but compliment each other.
[Hey, bacillus! I'm noticing that you and I think the same about a lot of things on the car forums
]
