When you are a gambler you are addicted so when you will gambling you cant save money but if you want to save then you have to withdraw the fund while you gambling the part of the fund or winning amount you may withdraw which can be saved but once you loss as you are addicted you may again try to deposit that fund.
Saving your money in gambling can be carried out by limiting your amount that a gambler has to decide only. By limiting your money you would be able to stop your game when you are done with your limited amount. But there is no need to start gambling considering it your major source of making money, as there are many good ways too. Furthermore, if you are thinking to start gambling with your savings then there is no need to save money.