I feel sorry for you but considering you've managed to mine blocks I think you have had more bitcoins than I've had to play with. I have lost a similar amount of bitcoins. It hurts a lot but at the end of the day it's just money. You learn from your mistakes.
I've seen the bad side of gambling a few times. More so recently. I won't mention names, but within the week a person took out 50btc from coinbase without having the money to back it in their bank account.
They then proceeded to gamble with it on a dice website. They thought it was harmless until they lost it all. In a panic they started to contemplate suicide, taking out loans, and etc. They eventually decided to take more BTC out of coinbase without having the money to back it and attempt to win their losses back. Thankfully, for many people's sake, they did indeed win back their 50btc loss, plus a couple btc extra. Still though, that's some destructive behavior and had they lost again who knows what may have happened.
Be careful when gambling- If you cannot handle it, get out while you can.
Scary story. I hope I never become addicted.