After repeatedly telling the world that she was sober and had not used any drugs since she found out she was pregnant while I told you the complete opposite, Jenelle Evans decided to admit herself to rehab for the first time since November. She is back in rehab because of her continued use of heroin and inability to stop using. To me, heroin seems to be the toughest drug to rid yourself of. Even with methadone and all of the other substitutes you can give yourself, I always feel like once you try that it is all over for ever being truly the same person you were before heroin. All you do all day is think about the first time you did it and just chasing that high. I don't know if any other drug does that in quite as evil of a way.