Before buying into any tournament we need to be aware of, how long it will potentially last and make sure, we have time to finish it and wont get tired or lose concentration, before its over. Just to give an example yesterday I won an 11$ "Big" MTT on
pokerstars with around 170 participants. When we got to the final heads-up, my opponent had a massive chip lead. 177 BB against my 36BB. So he was a clear favourite to win. But over the next 24 minutes and 93
hands I gradually managed to claw back to even and then a small chip lead with 80 BB against his 60BB. Still a completely open game, but then he made this massive punt and basically gave me the victory:
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I can only guess, that at this point he was just done with the thing and did not even care, if he finished first or second. After all second place is already a good payday. But if your goal is to play tournaments for profit, either professionally or as a serious side hustle, then you cant just punt away a 60BB stack like this in the final heads-up. And this is why, mental stamina and concentration is so important.
As for the solutions you say, that most tournaments run in the evening in your time zone. This is definitely not true. On all major sites tournaments run 24 hours a day, so you can play anytime, you want. It might be, that the largest tournaments run in the evening. That is typically the case for people like myself living in Europe. But then you just settle for playing in the smaller tournaments, which run earlier in the day.
This "Big", which I won yesterday, began at 7 am CET and finished at 12.30 pm CET. And no its not as large as those running in the evening. But the upside of that is, its much easier to beat a field of 170 people rather than 1.700. So basically you just need to start playing earlier in the day. Maybe not at 7 am, if you like to sleep late in the weekends, but not at 7 pm either. Maybe start after lunch. Or you can pick tournaments, which dont last as long. Which will then typically be SnGs, turbos and hyperturbos.