If you want to take an 8-hour break from trading, you can. Just convert all your bitcoins into whatever your home currency is at the end of the day and convert it back the next morning.
Exactly. If you're a day trader - just "don't take your position home with you"
(or pay someone to manage your position)
If you've got a longer view - put in some stop loss orders and maybe a supervisory bot as well.
(or pay someone to manage your position)
How the OP didn't realize that restricted trading hours for a global system like bitcoin is an awful idea I don't know.
It shouldn't take posting to a public board and being told this in many different ways to work this out!
What will vegetta's next suggestion be.. a porn website which goes completely offline when he wants to go to sleep, so that he can rest easy knowing it's secure from hackers?