For instance with overeating, it is a preservation instinct related with the urge to accumulate calories for when times get hard.
With drugs and substances, we can call this the shamanic spirit.
With sex, it is the urge for procreation which is again related with the survival of the human specie.
The point is that there is always a sponsoring force stimulating or activating that specific addictive behavior.
The way to solve an addiction is to trigger a new spirit or give that sponsoring force a new job.
Let's look at triggering the opposite spirit to the one that triggers the addictive behavior.
For instance what is the opposite spirit to the one that sponsors overeating? Which one is it?