Jennifer Lopez's children always cheer her up.

Jennifer Lopez

Jennifer Lopez

The 'Booty' hitmaker has revealed she counts on her kids - seven-year-old twins Max and Emme, whom she has with ex-husband Marc Anthony - to keep her positive if she ever feels down.

When asked what makes her smile, she told Radio Disney: "My babies. I realise that when it comes to love, they don't have to love you back. The joy is in that I get to love them as much as I want to.

"I know they love me back, but that's what I realised I look forward to, why I want to be with them, because I get to give to them. It's a great feeling to give; being able to do that with them is the greatest joy of my life."

Meanwhile, the singer and actress recently admitted to hiring a "manny" for her son because he had started to get a bit rougher with her as he got older.

She said "The poor boy is surrounded by women 24 hours a day. One day I'm looking at him and he like jumps on me and hurts my neck.

"He's so aggressive, he's six and he's killing me. I'm like, 'What the? Baby, no'. And then the nanny is like, 'Ouch, OK Max.' He wants to roughhouse.

"He has this thing and I go, 'This poor kid he's just surrounded by women all day'. I was just thinking of my child and I got a manny, a nice guy to come in and like hang out with him and have fun."