Logically right, to have extra money you need to look for other options, doubling your money into gambling that's something that really hard to achieved, sometimes you may win and most of the time you are at risk, what's important is you have that will to move forward, when you lose you need to assess yourself and see if you are still capable of controlling yourself, losing that control will always be the risk behind this activity.
Always have that discipline to make sure not to fall into any potential risk with your financial and mental aspects.
Gamblers need to accept the reality, gambling is supposed to be a hobby and not our main occupation, while the idea of earning a lot of money and also have fun in the process is a very attractive proposition, we also need to consider how likely is it for us to obtain those results? And it should be obvious this is not very likely, as the games offered by the casinos are naturally disadvantageous to us, and while on the short term we could earn some money when it comes to the long term we will lose it.