How can you tell if your degree will really be "useless" or not?

I started college majoring in cybersecurity. It was boring as all hell and I couldn’t stand it so I dropped it and am now a Criminal Justice Major. I am looking towards getting some certificate in counseling and I may pursue that as a degree after my associates as I would like to be a victim/witness advocate.
I feel that I have a good plan and that I’m choosing a career I’ll enjoy and one that I want to do. I have a lot of people saying that CJ is useless. I try to ignore those people but even though I am super passionate about this and I love all my classes (much more than the IT ones) I sometimes feel doubtful. I don’t mind that it will be a stressful job. I feel that it will be worth it and same with the fact that most careers in the field don’t pay well. I don’t mind that. As I said, I feel it will be worth it and that this isn’t a useless degree. But how do I actually make sure it won’t end up screwing me over? (I am doing related clubs at school and will be doing other extra things once I get a car to help me stand out and gain experience)