Different people have a different concept of what intensity means and it is often classified in people’s minds as one of these or some combination of all of them. Instead of creating a universal definition, I will avoid the definition all together and say that the primary objective of any training program should be the progress of an individual’s goal. I realize that is a simple concept, but many people’s definition of intensity or blind faith towards pursuing that as a dose response actually STOPS them from making progress in their goals.
It's written with the idea of gym trainers in mind but covering the topics of Motivation, Competition (most likely least relevant to climbing), Movement, Self-Compassion and Life Balance, there's lots of useful insights.
And perhaps a way to help to work towards getting the intensity level and planning ahead is to make sure you've got your plans right is to do some SMART goal setting (that's an acronym although the word is apt too :), being smart with your goals and following through on your resolutions.