End Program: Word Is Not Responding

I’m at the end of my rope. I must have seen this screen at least 30 times today:

It seems that Microsoft Word just doesn’t want me to accept changes. Seeing as the Track Changes feature is really the only reason to use Word in the first place, this is particularly frustrating. Please, somebody create a competitive program that is compatible with this feature! That way, the use of this program really could End Now.