Guilt is the great destroyer. It is an emotion that can literally cripple you, bringing your life to a stand still, even to the point of considering suicide to escape those feelings.
The pine type feels guilt for things that they may or may not responsible for. Often, this coupled with a feeling of remorse or angst.
The pine type will feel guilt for all kinds of reasons. Perhaps it's for someone who did something wrong, maybe for the way they were treated in childhood, not fulfilling their role as they expected to or even not performing up to their or others expectations.
Children often feel responsible when their parents break up, so Pine would be of great benefit for them.
In my observation, Pine comes up very often, especially with sensitive people.