JLO avoid breaks to avert career stagnation?

Los Angeles: Jennifer Lopez reportedly avoids taking a break from work because she fears if she will take time off, her career will "be over".

The singer, who has five-year-old twins Max and Emme with ex-husband Marc Anthony, is always working on new projects and ideas, but her busy schedule makes some people around her uncomfortable, reportedly.

"Jennifer is constantly working, 24 hours a day. She makes phone calls at all hours of the night. She`ll have an idea and work non-stop until it happens. That kind of work ethic is why she`s had success, but it`s hard for people to deal with," said a source.

"She`s afraid that if she takes time off it will all be over. She actually took a break when she was with Marc Anthony and had the kids. Her career kind of stalled. She freaked out.