@RoseW1 I think it's worth completing "Helping Elizabeth", and not only for the sake of your patient readers. You'd be surprised how good *you* will feel, having completed a story. Finishing a story is a great achievement, and it will give you more confidence to tackle the next.
Once it's done you can leave it for a bit if you like and work on your new story, because you always have the option to complete your edits on Helping Elizabeth at a later date. Editing a story is actually easier if you put it away and forget it for a few months, because you view it with fresh eyes.
Hope that helps. Merry Christmas! :)