How to not take it personally

My husband of 13 years was sober from December until two weeks ago. While he was sober our marriage was the best it’s ever been. I was the happiest I’ve ever been and he was so proud of himself. I regained so much trust in him. He vowed never to drink again. He said he would never go back to that or put me through that again (2 dui’s, lying, sneaking etc) so now that he’s drinking again it feels personal. I know logically that addiction is to blame and that he’s not doing this to hurt me, but emotionally it feel’s impossible not to take it personally. It’s not fair that I finally got to be happy and see how great life can be for us and then it gets ripped away so fast at someone else’s discretion. I feel like I’m right back to where I was before.