Defeatist Attitude...

So why do I get a defeatist attitude when confronted?  At times, in the course of a discussion I realize that my opinion or "side" is not worth fighting for in that instance.  I do not like conflict.  I do not like to argue with someone I care about.  I am more likely to "give in" with someone I care about in an effort to keep the peace.  I have had experiences in past relationships that have taught me that sometimes it is better to keep my mouth shut, because if I don't keep my mouth shut, bad things happen.  The majority of the physical abuse that occurred in any of my past relationships has occurred from me "fighting for my opinion" or asserting that I am right.  In that instance, it doesn't take long for someone to adopt the "Yes, you are right" attitude.  Is it the correct way to handle things?  No, of course not.  However, just like it was a learned behavior to adopt that attitude, I also have to relearn how to NOT do that in our relationship.  It is not something that you can expect overnight from me, but it is certainly something that I will give my best effort at avoiding in the future.  Please point it out to me when you catch me doing it, because there may be times where I am truly unaware of it and need your help.