Cognitive inertia - difficulty in changing our minds

The word 'inertia' was coined by Johannes Kepler from the Latin for “unskillfulness, ignorance; inactivity or idleness.”
It refers to resistance to change, especially in motion. However, it can also apply to resistance to change mentally.
The heavier an object is, the harder it is to change it's speed.\
The faster we are moving, the harder it is to stop
Hence, Newton's first law of motion: "A body remains at rest, or in motion at a constant speed in a straight line, except insofar as it is acted upon by a force."

Mentally, we also face inertia - it is difficult to change our opinions or ideas, especially if we have held them for a long time.
We may hold Confirmation Bias where we only accept proof that verifies what we currently believe.
Sometime, this is positive for us. Questioning everything all the time would be exhausting and time consuming. So once we have made a decision it makes sense to stick with it for a while.
However, once there is proof that a decision is poor (bank we use? investment decision?) it makes sense to change