When a partner has addiction problems the addict is constantly looking for that high/feed. This mentality is very narcissistic and leaves a partner and children feeling like they are never enough.
Never enough validation, never enough drama, never thin enough or happy enough or even being a lifetime student or a workaholic So many kinds of addictions.
This type of person tends to leave partners and children feeling like they are not worthy or good enough. That is not the case, instead the problem lies within the person who forms some kind of addiction.