Need some advice from married women

My husband was raised in a family where he never was told "good job son" or "I'm proud of you" and they hardly ever said "I love you" and he was expected to push his feelings out of the way and they didn't matter. Now it's impacting our marriage and I'm not sure how to go about it. Anytime I mention things we need to work on he takes it very personally like he is a bad husband and I tell him he's not and I love him so much but every marriage needs to be worked on to keep it strong. And i have a hard time getting him to open up to me about what is wrong and how he is feeling. 
Any advice from married women? Or anyone going through the same thing?