Jennifer Lopez: 'I Love Myself Enough to Walk Away'

"I really worked hard at it. We both did. Sometimes it doesn't work -- and that's sad," she explains. "But I remain an eternal optimist about love. I am positive -- determined to move forward with my life, bring up my babies, and do the best job I can as a mother, entertainer, and person. I now look forward to new challenges. I feel strong."