Im a reader not a WRITER,how do iget in writing mode?

I would say the best way to start is with stream of consciousness writing. Just write down everything that you are thinking whether it relates or not. Write as much as you can then stop and reread it. Then just try and find something in what you wrote that inspires you. Think about it then starting writing again but only things about that, just write everything you think about it, stop and reread. Then just take all the ideas in that writing and find a flow.