Managing your psychology is probably the most important component in this. "Success is going from failure to failure without losing your enthusiasm" afterall! I'm sharing my experiences of making https://histre.com/ as a solo founder almost daily, while I have my second cup of coffee here: https://www.youtube.com/channel/UCHkgOonAQd5haT8HHJhpg6g You may not get anything in the form of "advice" there, but I hope the camaraderie would help.