However excellent your reasons for quitting may be, as another person wrote, do NOT quit unless you have already found another job (unless you’ve won the MEGA lottery!) It is ALWAYS easier to find a new job when you HAVE one than when you are unemployed.
**ALSO – do not be surprised if they do not want your 2 week notice and ask you to leave immediately. This is not (necessarily) out of meanness or spite. Often employers are afraid that if you are leaving, you may use your two weeks to sabotage their systems, steal information for your next employer, or at the very least, just goof off.
As others have said, however difficult or awkward it may be for you, DO speak to your boss IN PERSON. That way YOU have done the right thing. As they say… Don’t Burn Your Bridges Behind You!