Do one thing at a time, and do it well. Human brains didn't evolve to be proicient at cognition-heavy multi-tasking. You can habituate yourself to it to some e

Do one thing at a time, and do it well. Human brains didn't evolve to be proicient at cognition-heavy multi-tasking. You can habituate yourself to it to some extent, but there's a good chance that your exhaustion is your body asking you not to treat yourself like a machine.