These types of activities are harder to recognize as being harmful because they involve behaviors that are socially acceptable. Society applauds the person who works hard, who is organized, who is physically fit. Therefore, it is easy to not recognize that the workaholic, the obsessive compulsive, the fitness fanatic are people who are hurting themselves.
There are many ritualistic or repetitive behaviors that can be used as painkillers. Almost any behavior, when used repeatedly, will cut us off from feelings and therefore become addictive. This is why we feel compelled to overwork, shop too much, exercise too hard and spend too much time watching television, playing video games, browsing the internet, reading, gambling, and the list goes on. The predictability and certainty of routines also act to temporarily reduce tension and anxiety. This is why we want to structure our lives with the same daily schedule, the same weekly diet, the same annual vacation.
Think about your daily life. What are the activities that you may be utilizing in a repetitive, ritualistic way? Could you be using compulsive activities and routines to avoid feeling?