You are addicted to a substance or action of some sort, be it gambling, drugs, alcohol, or something else. You feel an innate need to fulfill this addiction and must fulfill it at least once per long rest or suffer withdrawal. After each long rest, if you have not sated your addiction, you receive a -1 to all skill checks. This penalty increases  by an additional 1 for each additional long rest the character goes through without feeding their addiction.

FLAW. This is a flaw feat. At your DM's discretion, you may take this feat at level 1. If you do, you may also gain a feat, or increase two of ability scores by +1 (or one by +2).