Working while travelling?

I’m 18 years old and since I was little I’ve always wanted to go nomad. I want to see the world and experience so many things! I’m currently getting my car ready to travel around Australia but I’m not sure what to do for money?

I’m almost at the end of my hairdressing apprenticeship and thought I could do that on the road. But how successful would it be? Or do I keep my hairdressing job and just take holiday leave whenever I want to go? But I don’t like the sound of that as I don’t want to feel stuck.

Someone mentioned to me I could do copy writing or something I can do on a laptop from my car?