I keep starting, but not finishing

As the title states, I've started a pair of Jaywalker socks and a scarf. But I'm still knitting on the accordion sweater and the other trial pair of socks in lb magic stripes. I'm not liking the way those look though. I should start using my good sock yarn, but I'm afraid I'll mess it up haha. And I don't have a ball winder.
The scarf is just a turquoise and pink striped scarf knitted in garter stitch length wise. The yarn is Lion Brand Wool-ease (the pink is leftover from the wristwarmers) doubled up on size 15 needles.
Ok I should go study (knit) some more.