I second you on this thought. The positive mindset is good, but it is only progressive if used in the right field or activities. Gambling is not the right place to have a positive mindset, it's better you use the gambling mindset in gambling, because with that, you will be prepared for the worst.

If you are using a positive mindset in gambling, you will only find yourself repeatedly gambling regardless of whether or not you are losing. This is just a motivation that can put you in trouble of persistent hope that may never be fruitful.