I use to walk around work whistling a favorite jazz melody dujour because I was always in a good mood. People would joke that they could hear me coming. I also know what it's like to be in the thick of the insanity that is living with an active addict loved one. But I'm here to tell you it can get better. Get support, get educated about addiction and get yourself first on your list of priorities. Stick around.
BTW, I love Murrells Inlet. Been there many times and on my short list of places to retire.