Science advances one funeral at a time.
Max Planck, early 20th century physicist
A more literal translation might have been
“A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.”
Change management is hard. Even when we understand something intellectually, getting it emotionally and actually taking action are very different things. It is as though different parts of the brain were at work.
If you have to change yourself or manage change in an organization, try not to get frustrated because this is just the way it is. Have a plan, create a supportive environment, and try to get repetitions with increasing levels of pressure and complexity, start easy and build up. Under pressure we will revert to our old ways.