Embrace it? You seem to be more productive when the world is shut out, so embrace those hours and reschedule your day around those golden hours. Also probably you have ADHD...
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Hahaha well I get too tired then :D Im getting old haha. - Well, I never though about ADHD but IDK I will check. Thanks man!
Btw I am kinda the same, it's 21:35 now here and after dinner will get to work on second flow session of the day.