Show compassion and acceptance

To improve relationships, treat others the way you wish to be treated. We all yearn to be treated lovingly with respect, kindness, understanding, compassion, and acceptance. Though there are no guarantees, but often treating another with kindness brings kindness in return. Kindness to others doesn’t mean self-sacrificing, but taking the task for yourself as opposed to blaming others is the most important thing you can do.
If you are always kind to your partner and to yourself, but your partner is always blaming, angry, unavailable, and withdrawn, then you need to accept it as a far off relationship, or you may need to leave the relationship. Remember, you cannot change your partner, you can only change yourself.