I recently found myself a victim of the overwhelmingly addictive game called 'Dice.' After 5 straight loses, one $10k win, and then a $25k loss, I blocked myself out for a solid two weeks. Though, still, I'm presented with the option to reduce it to only 24 hours. My suggestion is to add in a counter on the 'you've blocked yourself out of gambling' screen that shows you how much money you've spent in the past 7 days just on gambling, in an effort to keep impulsive people (like myself) from ticking that timer down to 24 and playing the second it turns over.