You may be chronically sleep deprived and not realize it. If that's the case you should try sleeping really consistently for a week and check the difference. Don't use an alarm, just be really disciplined about going to sleep early enough to wake up naturally. No caffeine or other stimulants.
The difference between a well rested brain and a sleep deprived one is night and day.
The difference between a well rested brain and a sleep deprived one is night and day.