I had a friend who, whenever I would ask how he was, would shrug and say "fine". It also shocked me a little. You're just fine? Why? He never did have a reason, he just wasn't happy or sad. He was neutral. Always just, "meh".
Why are you just fine? You can be fantastic! You can be happy! You can be ecstatic! You can be alive! Heck, you are alive! You're breathing, you can walk, you can smell, see, love, feel! You have a family. You have food. You have a home. You have a wonderful, incredible life. You have the gospel in your life. You have an intelligent, working mind. You're alive. You should be more than just "okay".