Try holding the control column with your wrists "broken" (in other words, with your fingers at 90 degrees to your arm) and holding thecontrol column/wheel with just your fingers tips. It is then quite difficult to tense up and so start overcontrolling.
If you usually hold the control column/wheel with your hands and your wrist in line with your arms then it becomes very easy to tense up and overcontrol if things are not going according to plan.
Use your fingers not your hands!