Why having a back up plan is important

Writing professionally has been my dream for as long as I can remember. While I know writing is what I want to do, and what I aim to do, I also know that I may not sell a single book. I, like everyone else with a dream, need to go after that dream while also working on a back up plan. I want to be able to support myself, even if I can't do it as a writer. I will also be happy writing even if I can't support myself. I will always write, even if it's just for me. In reality, most writers don't make enough to support themselves. It takes a lot of hard work to get your books out there and get reviews and sales. I'm truly happy for the people who have gone after their dream and do make enough to support themselves and are able to write full time, but that is not the average person.