If you still have a bunch of Bitcoins, then just stop gambling and hold those for long term. You could even try to trade or lend what you have left to recover what you lost.
Not sure if you already read carefully OP, he said he only have 15 btc left. Does it sounds a bunch of bitcoins?
Losing 10 BTC in three days is like losing 3.33 BTC in a day. That is too much, I think you need OP an intervention or a professional advice. It is already addiction? uncontrollable urges to gamble? ask help, you might need it.
Depends from how much bitcoin someone has, if someone has 10,000 btc and only loosing 3.33 btc, it is not much. If you look at my #2 post below OP, you can see someone lost 360 btc only in some minutes.
i think you should use that 15 btc to start betting again, go find good football match that have 2x odds, if you win then you have +5 btc profit and if you down again, suicide can be considered as a good option.
Giving advice to someone to suicide is not good thing for me.