Not addressing a thought when meditating

If I, for example, was meditating, and the thought came in my mind, say, obsessive-compulsively (meaning it keeps resurfacing due to the fact that the thought bothers me): "I'm a bad person", if I ignored it and returned to my breathing, would my *not* addressing the thought and thinking "No, I'm not, and here's why.." cause me to subconsciously believe I'm a bad person? It's holding me back from meditating because I feel uneasy about dropping the thought.