Yeah planning about your session won't contribute that much to your winning,
But if you divided (for example 0.25 bitcoins) in to a lot of sessions rather than just wishing for that luck to hit in all in game do make a great difference.
Cause you also dividing the luck and multiplying it,making the chance of winning a little bit higher.
It is better for me if I just bet that 0.25BTC in one go than doing small bets on different sessions. The latter requires more time to accomplish. And if you lose, you don't just lose money, you also lost time. If go YOLO on it, you don't spend too much time gambling. Spending too much on gambling may cause to be addicted to it. So, bet all your money once. If you win, nice and good. If not, better luck next time.
I fully agree with you. The more you bet the easier you get addicted to gambling. When I am starting to do a lot of tiny bets I usually end up playing until I am broke. Doing less bets with higher value is much better.