Always prepared for anything!
When I play games I usually have my gaming corner prepared with a lot of stuff so I can stay in games without having to back out every now and then. For example having something to drink within reach, maybe some snacks if I skip dinner, making my seat comfortable if I sit there for several hours and of course empty my bladder before I start playing. It seems silly but it sucks if you have to quit because you didn´t came prepared, especially if you found a group of people with whom you had fun playing games. Of course you can contact them but it´s not always a group of people that know eachother, sometimes they´re just random people that happen to be together in the same match. Looking at some games it kind of sucks when you end up in another lobby with people that aren´t that much fun to play with, I think you can kick yourself for leaving that other lobby just because you didn´t prepare yourself for a longer gaming session. So what do you need for a long and pleasant gaming session?...