Actress Hilary Duff can't really remember life without her two-year-old son Luca and says he has changed her completely.

The "Chasing the sun" singer credits Luca, her son with estranged husband Mike Comrie, for changing her priorities and outlook on life.

"I feel like I don't even remember who I was before I had him," femalefirst.co.uk quoted her as saying.

"He's taught me about patience, which I didn't have before. Being in this business since I was 12, I constantly was busy and on the go. I think having him has helped center me and calm me down and make me realise that the little things are important," she added.