It’s quite sad as your friend has created a theory that keeps him motivated enough to continue gambling even if he continuously looses. I doubt he hardly thinks of his losses as he probably has his eyes set on the big win. The big win that’s just around the corner.
An average gambler cannot afford to play daily with unrealistic hopes of winning it soon. He could lose literally everything and if he takes such an advice. Addiction would not far off as well. Your friend needs help and definitely need to take some time off gambling.
Maybe he felt hopeless so he created such a theory. He might be able to gamble every day if he were a rich person with a lot of money. But even if he is a rich man, it is not a good idea to gamble every day. That will only make him addicted.
If he is used to gambling every day, he will feel that something is missing from his day when he cannot gamble on a certain day. And that can make him sad or disappointed or other negative feelings. He needed other activities that could take his mind off gambling.
He couldn't gamble every day. He also didn't know when he would be able to win so gambling every day could make him lose a lot of money.