Do whatever works for you mate! You could be right that luck might be on your side but if it doesn't  then know when to pause I.e take a break .
You said it your self that you gamble for fun [which means you don't care about the loss or win eventhough somehow it always comes as win for you which is good anyways], so if you do think  you have  a chance to make more from it then you might not be gambling for fun this time around so pick your choice