How to win $500 million Powerball jackpot: Tips from a 7-time lottery winner

The Powerball jackpot has jumped to $500 million and those chasing the money are searching for secrets to win.

Seven-time lottery winner Richard Lustig was featured on "Good Morning America" Tuesday and offered his unscientific tips for increasing your shot at the prize:

- Pick your own numbers instead of having the machine do it for you

- Research and see if your numbers have won before

- Select your ten sets of numbers and keep those if you continue buying tickets

- Buy as many tickets as you can afford

Lottery officials say that the more tickets that are purchased, the greater the odds there will be a winner.

Lustig says he has won more than $7 million in grand prizes. He has written a book called "Learn How to Increase Your Chances of Winning the Lottery," and has a website with more information about his strategies.

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