Sorry to hear about your depression and hope you are doing well. Zordak is shaping up to be an excellent game and it's clear that a lot of work and passion has gone into it. The pixel art animation is fantastic and it feels like a perfect homage to the Metroid games. Really glad that you're continuing to work on it.
There's no shame in taking time out if a project it getting you down though. Video game design is an artform and if you're not feeling it, then it's hard to force yourself to do it. Sometimes it's good to take a break, play some games just for fun or even do a small game jam game as a palate cleanser.
Best wishes and keep up the great work (but don't feel obliged to work!) :)