One thing that I like to do to keep motivate me building something is share how I do it. All comments, questions, and appreciation from the others keep motivate me working on something so I keep have a new knowledge to share.
People start build in public on Twitter. You might want to try it. Share your work, how you solve a problem, find a similar project that might be related with your work, have a discussion with the others to gain more ideas. I hope it help!. Good luck!