If I don't 	get enough sleep,	I am	sleepy all the next day.	
If I don't	get enough sleep tonight,	I will be	sleepy all day tomorrow.	
If I didn't	get enough sleep,	I would be	sleepy every day at work.	
If I had	got enough sleep last night	I wouldn't be	sleepy now.	
If I had	got enough sleep last night	I wouldn't have been	sleepy this morning.