Did I choose the right major?

I've always wondered if I made the right choice when I chose my college major. I always thought I wanted to be a journalist, but I have kind of realized that I really don't know what I want to be. I don't know what it is I enjoy doing. I have a job and I do it well and get paid and all that good stuff, but I don't enjoy what I am doing. For me, my work is a necessity rather than a choice. I go through the motions each day and wonder if this will be my life for the next 45 years or so and the thought of doing this for that long scares the shit out of me. Unfortunately, I don't know what I could be doing that would feel rewarding. I sometimes wonder if I should have stuck to music. I love music and I enjoy singing and dancing, but I don't want to be a cliche or a statistic. I don't want to be yet another music industry reject. My only instrument is my voice and there are too many people out there already fighting to make it in that industry and I don't know that I want to be another plus one. I have thought of doing it for fun, but since I don't have fun, that is out of the question. I guess at this stage in my life I am a little too old to be making major changes that may not work out as I hope. With that said, can I be a zombie for the rest of my life? Can I spend the next four decades at a job I hate? I don't know what the answer is, but I hope I find one soon.