Today I gambled for about 3 hours on dice and ended up losing just over 0.5 btc.
So today was a very bad day.
Are you sure about that? Because someone here can just say he did just lost about 0.05 bitcoin without any proof. But if that is so, that is a big amount that you lost for this day. If that happened to me, I will regret that for many days or even weeks because I can't move on very fast with my losses. And with just 3 hours you lost that amount already, unbelievable.