Im hurting

Tomorrow me and my wife have to put our beagle down. His health the last 4 months has gotten worse. I feel like i failed him. I feel like i should have done more. We don’t have kids just him. He’s been in our lives since he was 6 weeks old. I dont know how im gonna be able to ever be happy without him in my life anymore. I haven’t really ate in almost two weeks. I have to take multiple sleep aids just to get any sleep. My heart aches my body hurts.