There's no single answer to this and there's really no way to know ahead of time. Therapy is generally very productive when it comes to treating OCD so you should definitely pursue it if you're struggling with OCD. That's the easiest way and actually, it's probably the way to achieve the highest level of functionality. You may think medication is an easier or faster option, and medication can certainly help with OCD, but therapy is really the ideal long-term solution. The goal is to change your habits and change the way you think about a phobia, so therapy is really the best way to do that.