When I started I did the exact same thing - I've only been scrolling less than a year now, but I've learned that having multiple projects are sometimes ok.
For example:
I may start and cut one of my puzzle projects, but not get to apply the finish for months
I've started a few plates with a lot of fretwork, and leave them when I get bored with the holes and small cuts and move on to a silhouette so I have a finished cut piece.
I often have 4 or more projects waiting for either a pre-stain/stain, dye or more often than not a frame.
I like making my own frames and often I'll line up 4 or more cut projects and leave the cutting until I've made a bunch of frames
So basically you're not alone LOL