Trying to finish project I started while hypomanic

I found an old kids rocking chair and had grand plans of refurbing it, painting a cool design and making money reselling it. I got the refurbing part done, which was more work and money than I bargained on, and did a bunch of sketches for design ideas. But then the hypomania ended. So I now have a nice blank slate but all my creativity and confidence has gone out the window. I’m trying to force myself to finish it but I just don’t seem to be able to do it. The sketches are really good, I know I’m a good artist, but that part of me just seems out of reach now. I wish I could conjure up just a bit of motivation or confidence to finish. Just venting I guess unless anyone has any ideas how to get some of that spark back. I can always sell it as is and try to get at least some of what I spent on it back, it just feels like a cop out though.