London, Dec 9 (IANS): Singer Robbie Williams says there are times when he wishes to enjoy a wild night out and have alcohol, but is committed to stay sober.

The 39-year-old has battled alcohol and substance abuse in the past and though he knows it is important to stay sober, he sometimes misses his hard partying ways as he had some good times.

"In the misery of chemical addiction and alcoholism, it's not all. How can I put this? You know, you don't have a drink and go straight to rehab. There were some enjoyable times too. It would kill me, but I had a lot of fun," contactmusic.com quoted Williams as saying.

"Am I separated from that person (who I used to be)? It's very, very easy for me to be in a similar sort of position, in a similar sort of place. There's still a place in my heart that wants to have it," he added.

But he says now he will never be in that pre-rehab stage again.

"I'm done with losing it that much," he said.