Proving verbal abuse in court

Just had a preliminary hearing and it looks like we are going to go to trial over child custody.  He's going to say I am a drug using, alcoholic bi-polar maniac.  Without getting into details, I can pass a drug test, hands down.  I am not by any means an alcoholic.  I have had some depression/anxiety issues, but I see I psychaitrist on a regular basis and she will back me up in court so I'm really not worried about that.  What is true is that he verbally and mentally abused me throughout our entire marraige.  Family and friends have seen it and a few times the police had to come out to the house because the verbal abuse escalated to him throwing things at me.  Since the verbal abuse is just words, however damaging they were to me mentally, they still are just words that anybody could make up.  How do I prove he was mentally and verbally abusive in court.  We even went to counseling back in September because of his anger issues he felt the need to take out on me daily.  That was when I seriously contemplated divorce and went to see my attorney.  He (husband) didn't know that at the time.  Now that I have filed his response is to accuse me of all of the crap I mentioned above.  He's even stating those are the reasons we are actually getting a divorce.  He's so arrogant that he doesn't even think or won't admit his actions have anything to do with our divorce.  It's almost like he is trying to portray himself as some sort of perfect husband which is SO FAR FROM TRUE.  Anybody know how you prove verbal and mental abuse in court.  He's also got a pornography ADDICTION which I can prove with computer documents but I think I am going to need more than that.  Could really use some advice.