If gambling is a problem for you you’re not alone and there are many ways you can get help. Most poker sites have staff trained in responsible gambling and offer self-imposed deposit and loss limits as well as the option for permanent or temporary self-exclusion. Even if you don’t have a gambling problem you should always gamble responsibly.
Gamblers Anonymous has developed a short questionnaire with 20 yes/no questions, the answers to which can help determine if you have a gambling problem. http://www.gamblersanonymous.org/ga/content/20-questions