How Pros Build Long Term Discipline

I had a massive heater last night where I was up nearly four times my buy-in within an hour and I felt completely untouchable. The problem is I ended up giving back almost half of those gains because I just could not find the exit button. I have been doing my sessions on Mostbet lately and since the interface is so snappy it is way too easy to just keep clicking for another round. How do you guys actually force yourselves to walk away when the momentum is high? Do you use a hard timer on your phone or do you have a specific win percentage where you just lock the screen and walk away? I would love to hear some discipline tips from the veterans here.