I have a story that I wish to write. I like my story and genuinely believe it to be interesting. My issue is that I have never really written anything before. When I have read advice in the past, I have often been told that your first few stories will suck and that you will have to move on to something new. 

If I want to gain experience of writing, should I write a few other stories, not the one I am most passionate about, before moving on to the project I think is best?