One of the things you should try is to just do it. Force yourself to break that barrier, if you screw up it will be easier next time.
You can't improve without failing first. It's what I do, before i used to be like that, both with my native language, english and japanese. Now I hop into it, if it's wrong then I'll get it right next time. Plus it's not a big deal. If you make a big deal out of it it will be a big deal ;]