What kind of writing do you have experience doing? If you want to get into journalism you need to develop clips. A blog could help with that, or writing for very local venues (for free). If you want to do freelance copywriting or communications writing (which is what I do), you have to develop a portfolio of that kind of work. I have gotten most of my work through personal contacts and networking. It's not easy to get work and there is tremendous competition - pay is very low and getting lower as the market gets flooded with unemployed journalists. I would build on your contacts and the kind of writing you have done for work as that is likely to be your most marketable angle.