The secret is quite simple... and you're obviously doing it all wrong... so do this: -
1. Put the key in the lock and turn it until the lock is open.
2. Turn handle on the door until the door can be moved away from the frame.
3. Pull the door towards you, put your left foot foot first, then your right.. and so on, until you're outside the door.
4. Close door behind you :D
So, now you know how to go out the door properly, there's nothing stopping you is there?
(this is posted in humour incase you can't see the smilies) :D :D