When the subject of addiction is broached, substance abuse springs immediately to mind. But many addictions are just extreme forms of habits that are acceptable in moderation, such as shopping, gaming, eating, working, and exercising. Your character might start innocently as a social drinker, for example, until a life event propels that behavior out of control. Because there is shame associated with addictions, a character may go to great lengths to hide the truth of their condition from others.

Personal Health Issues

ABANDONMENT, BEING CAPABLE OF HARM, BECOMING WHAT ONE HATES, BEING JUDGED, BEING LABELED, BEING SEPARATED FROM LOVED ONES, CONDITIONAL LOVE, CRITICISM, HUMILIATION, ISOLATION, LETTING OTHERS DOWN, LOSING AUTONOMY, LOSING ONE'S SOCIAL STANDING, LOSING THE RESPECT OF OTHERS, NOT BEING IN CONTROL, ONE'S BODY BECOMING A PRISON, REJECTION

Functioning suboptimally at work
Being a less-than-competent parent
Struggling financially because of the addiction
Living below their potential
Not receiving the help they desperately need to be healthy and fulfilled
Avoiding people and places that make them feel guilty for their addiction
Being seen by others as unreliable, unpredictable, selfish, or flaky

Using cash or secret credit cards to fund their addiction
Masking odors with perfumes, soaps, or mouthwash
Engaging in addictive activities behind closed doors
Keeping the related paraphernalia elsewhere
Making light of the addiction as nothing serious, just “harmless fun”
Lying frequently (about where they've been, what they've been doing, etc.