IMHO, you have no motivation to earn money since (I'm assuming) you have little to no expenses by living at home. Set a goal to move out by the end of the year

IMHO, you have no motivation to earn money since (I'm assuming) you have little to no expenses by living at home. Set a goal to move out by the end of the year. Seeing my monthly expenses go out without any income coming in is always a big motivator for me. As an alternative option to getting a job, you may want to consider teaching English overseas. If you pick the right place, you can live cheaply and only need to work part-time which can give you plenty of time to work on your idea. It is also a great experience for other aspects of life.