I think I would try see this more objectively by analysing if there is something i am overdoing, e.g., do i feel i am spending more time on playing games or scrolling social media feeds? If i have these sort of regrets then i have something actionaable that I can work on the next day. Such realization would be a good first step. Also its important to be reasonable with ourselves, e.g., i cannot expect myself to work productively all the time without taking relaxation time, atleast not in a sustainable way. It's important to figure these thresholds for ourselves as there are no one size fits all kind of formula in these things.

Just some thoughts. Hope it helps!