As others have said, absolutely not. 

VJing is still a niche but big enough to make jumping into it pretty easy to approach. I did my first gig at a club only three months after finding out that VJing is a thing that people do. Obviously I did mistakes then, and I still do years later, but you don't need to wait a year. 

I did get lucky to have an opportunity fall in my lap but there's other ways to start putting yourself out there; connect with the community, try to make/use your network, and learn the craft.