Gambling addiction is something quite serious and it is not easy to get rid of. But if you are addicted towards online gambling than there are few things that might help you to limit your losses;
1. Just play for some hours per day.
2. Set limit for both profit and loss for a day.
3. Only deposit what you can afford to loss.
4. Cashout your deposit if you make some profit and only play till you loss those profits.
5. Try to consider gambling is just for fun and not for making money.