The concept of adjusting to a world without the deceased is associated with

Adjusting to a world without the deceased is associated with Worden's tasks of mourning. It is the third task and will be handled differently by each individual based on their own circumstances. It is what each person has to do in order to move on in their life.

It is meant that like tapestry scientific theories often need to pull out since they are not relevant and often times the whole chain of theories may be pulled out.   

This would be a example of a "i want to be single person"