Why did I want this project done in the first place? Is my vision for the end result still true? Is it worth the effort? Do I need to rework my timeline and expectations? Maybe you are trying to do too much too fast. Life does need to go on while you are working on this vision.
List all the things you have accomplished so far. Focus on this instead of what has not yet been accomplished.
Think about breaking some of the tasks into even smaller parts and reworking your timeline