After displaying some erratic behavior recently, Justin Bieber is getting a little advice from LL Cool J.

According to Hollywood Life, the actor has a few words of advice for the young singer. LL knew what it was like growing up in the spotlight and offered Bieber some guidance.

"Sometimes you just gotta take a step back and remember why you got into it, and not get caught up in [the nonsense.,]" said the NCIS actor. "When you're cool, you don't have to try to be. If you're cool, you don't have to try to be cool; it's just cool. So you don't have to overdo it to seem like making it more than it is, you know, but that's just little kid stuff."

LL even offered all young star what not to do. "What you DON'T want to do is make a mistake and get hooked on some drug, or make a mistake and blow all your money, or make a mistake and cross the line somewhere that you can't get back over from," said LL.

The actor says that despite some of the mistakes these young stars make, they will ultimately help them down the road. "People make mistakes. I mean, I did a lot of crazy stuff when I was 17, 18, 19," said LL. "We just didn't have Twitter and TMZ and all that crazy stuff. They weren't chasing us around, so, they'll get over it; they'll mature out of it."

This is not the first celebrity to criticize the young singer. Bon Jovi criticized the young star for coming to concerts late in Europe, according to the Hollywood Reporter. "Do it once, you can be forgiven. Do it enough times and shame on you," said the legendary rocker. "They won't have you back. Then it just becomes a cliche. It's really not cool - you're an a**hole. Go to f**kin' work!"