Jennifer Lopez worries career could end

Jennifer Lopez has admitted that she worries regularly about being rejected by Hollywood.

Speaking at the Hollywood Foreign Press Luncheon last week, the singer and actress explained that she constantly works hard to avoid the possibility of her career plunging into a downward spiral.

"I wake up every day and I worry that it all might end; you just never know in this industry," she told FOXNews.com. "No matter how successful you are, this is Hollywood - it's unpredictable. But it is this that motivates me just to keep working harder."

Lopez added that she would not necessarily recommend her own approach of pursuing both singing and acting projects.

"I think if music is your passion, then stick to music, or if acting is your passion, then stay with that," she said. "But for me, I wanted to try a variety of things and it’s the diversity that I love. But everybody is different and at the end of the day you just have to follow your heart."