It depends on the situation. Sometimes, when you're feeling down and things aren't going well, you still have that 1% of hope that luck will come your way and it actually does. More relaxed and positive people, like you mentioned, will just accept difficulties more easily. Luck can come when you least expect it, and no matter how relaxed, positive, or the opposite you are, i believe you can't really influence luck.
Those who play until the last minute and do not want to stop definitely hope that they will be lucky, otherwise they would have stopped earlier. Luck is needed by everyone and always, even by those who rely only on themselves, but those who know how to assess risks will not proceed from the most unfavorable situation, even think about what will happen if my bet loses, how difficult it will be for me, from this position you need to assess everything.