It doesen't always need to be an epiphany or confidence... for me, it was desperation and stubbornness! I'd OD'd when I was 15, and got caught, so I spent a few days in the hospital and had to see a councellor afterwards. I was horrified that I'd been caught, because I worked so hard to hide everything. I didn't want meds or to be diagnosed, and I figured if I was going to keep faking it, at least I could attempt to change myself and my outlook a bit to make it easier to fake it. Then some things became habit, and then eventually things started to get better and more tolerable. Still have relapses, but at least I know what to work myself back to!