Deployed, ADD, and Marriage Problems

Ok so I am deployed and found out that ADD has affected my marriage in very bad way.  I love my wife so much and I dont know what to do now.  How do you communicate and fix a marriage when you are deployed to Iraq.  I am reading books and now know what I did wrong, but I am so afraid of going back to me not paying attention to her, being to distracted.  Will meds and therapy help in those areas,  Any Ideas, or suggestions