About the same for me except that being a night person is why I used to work the night shift. My problem comes from the 7 years since then that I've spent work

About the same for me except that being a night person is why I used to work the night shift. My problem comes from the 7 years since then that I've spent working day shift. I'm usually ineffective until about 10am, then good until the midafternoon, when I have trouble focusing for awhile, then good until the evening slump (transitioning out of work) then good until 2am-4am.