You are unable to keep them and make good use of them because you didn't apply wisdom that is running away from the gambling for sometime and use the money for something better or you can still set aside some of the money you won and use a little cent to gamble and make sure not to touch the one you set aside regardless.
This is going to be difficult therefore the best solution is to stop gambling for sometime and maybe only resume after you have used the money that you won previously to have established something useful for yourself. Just winning and still gambling frequently is only going to make you lose and not to keep giving you more profits as you're assuming. After winning, the thought that you can do better isn't always the best thought to follow. Instead follow the thought that you can lose everything as that'll help you to avoid gambling. Established a business that's going to help bring money for you and your attention on gambling will reduce.