You picked up again after weeks or months of not using, and the shame hit before you even finished the thought. Here is a more useful way to see it. Addiction behaves like other chronic conditions, asthma or high blood pressure, which flare when something in the plan stops working. A return to use tells you what your treatment was missing. It does not measure your worth. What you do in the next day or two matters more than the slip itself, so reach out before the isolation sets in.