How would you handle the issue assuming you have thesame gambling problem (specifically self-control/addiction problem) in physical life? I'd probably advice you to treat gambling addiction (if that is the issue), maybe by quitting bit by bit if you can't quit immediately. If you aren't profitable after spending alot of time betting then you'll need to look for something else to spend your time and money on.
^ They have all provided good advice and none of those will fail you about defeating the urge in crypto gambling for it always depends on you how you can control yourself. I just want to reiterate your concern for your crypto gambling urges but not with fiat because these two have differences however both can be used in gambling. There are some factors why people get addicted to gambling and how some were able to cope up but your issue is quite different probably it is your perception of the value of cryptocurrencies versus the fiat money. But you have mentioned you are a believer of the crypto world but you may try asking why you couldn't afford to lose a fiat on your gambling activities unlike with your crypto, you might be a believer of crypto space but not accepting it same as how you value your fiat money. If you will include gold or silver on your gambling concern like gambling with your gold, fiat, or any cryptocurrency which of these you can afford to lose? And that will answer why you don't have an issue on fiat unlike with your crypto gambling.