For example, if you're not happy with the prizes you're winning, change what you're doing. Enter a different type of sweepstakes, or enter at a different time of day, or try mail-in sweepstakes, or enter more often. Don't just tell yourself that you're too unlucky to win.
Similarly, if you're going through a streak of bad luck in your everyday life, take a close look to see if there's anything that you can do to break out of your situation. Be luckier by refusing to accept bad luck as a given.