How does changing your strategy affect you in gambling?
How good is it for long-term gambling results by changing strategies repeatedly?
Are there really some strategies that are known for bringing good winning results to gamblers or perhaps you are referring to the healthy characteristics that a gambler need to adopt. Responsible gambling characteristics such as betting with the amount you can afford to lose, betting with a proper bankroll management, not being too greedy, having a gambling timetable and knowing when to stop are very beneficial to gamblers if practiced and can help the gambler not have gambling problems. So, such strategies can influence a gamblers previous gambling habits but doesn't influence how they win because winning is based on luck and luck is random.
I have seen people that lost money and change their strategy, think they can earn money from gambling but at the end, they lost more. I have even been in such situation before but I later changed and think in the right direction which is to be using what you can afford to lose to gamble.
If that's what he meant, then he doesn't know yet that there's no strategy in gambling that even works 30% repeatedly. The chance of winning and losing in gambling is 50/50, while the casino have the house edge that let them to always remain the winner while a gambler has just less opportunity to win, that's why, no matter any strategies that is adopted, the casino will always remain winners. I don't think OP know this. Gambling is not same thing with sports betting where your results depends on your prediction.