That is not how you wake a sleeping student.
You do it by putting a sheet of complex questions in front of them, and then loudly saying “you may now turn your papers over, you have 1 hour to complete the exam”.
Jokes aside, if a student is sleeping in class, you probably want to have a word with the DSL to check up on them after class. Students only sleep if they’re exhausted or you’re really crap at teaching - get one of their mates to wake them quietly without drawing too much attention.
Tricky one to weigh up there. It might not be that you’re lazy, you may well just be burned out, not working effectively (i.e. overworking yourself), or it could even be imposter syndrome. On the other hand, yes you could just be lazy, or you might just really hate your job. Hell, there have been times where I’ve felt unmotivated because our leadership team were just arseholes - sometimes a lack of motivation goes beyond just your own choices.
There just isn’t enough data in a short post.
Take some leave, go get checked out by a doctor, talk to a friend/partner, take a look at job ads to see if anything sounds better than where you are.