Your entire condition deteriorates when you’re tired. You become irritable, frustrated, and even sad. You’re not like this in the morning when you wake up early because you feel refreshed.
You need to sleep. This either means you need to start going to bed earlier to wake up at your standard time, or you sleep less and nap for some time during the day. If you can’t nap during the day, then you have to go to sleep earlier. I’ve seen you go too many days without a nap and you’re left exhausted by the end of it. Then you sleep in on the weekend and abandon your industriousness because you failed to plan out how you would work and stay healthy at the same time. Budget your sleep and stick to the budget.