You can earn more money from gambling but You can lose all your money.
the secret is a correct management of money and a good bankroll.
Having a good bankroll or, in other words, good amount of money on your balance might help you to win if you are going to increase your balance say not more than 5%. You have pretty good chances to succeed in this.
However if you want to win 50% of your balance or even more, you will lose most likely.