The longest I could last without gambling was roughly a week.
This is not a good thing for you because it means you are addicted to gambling and the reason is obviously you are making it as a source of income from it rather than to enjoy and make it fun. How much have you won or loss till date and from how many years you are into gambling?
Gambling can never be a source of income. It is rather the worst source of earning and best source of losing money. Like if someone is interested to lose money, he might be going for gambling to make this dream come true. Therefore it is often advised to not to gamble, if you do so, believe me there would be bad circumstance for you and your account would just be down.