Approach an old project with a new attitude. Example, did you get tired of the border, think about how satisfying to finish.
From Charlotte Brooks:
I brought out a sampler I had previously started called In Prayse of the Needle. I hadcompleted about half of the main scene in the sampler and 1 row of the poem that goes with it. During August I completed 99.9% of the scene (I ran out of one color of thread) and 3 more lines of the poem. So I’m about 70% done with it.