Some people convince themselves that they ought to start their own project, because it's the "right" thing to do. But deep down, it's not what they actually want to do. If you give up on a project after only 2 to 4 few weeks, it's likely that you're one of those people.

It's not all bad news though. You need to revisit your motivation for doing your own project. Money alone is rarely enough to offset the emotional drain of doing so. And as I said above, neither is doing it just because society values individuals who pull it off / go the effort of at least trying. Ambition for the sake of ambition won't cut it.

Find something you're passionate about. Change the world, change people's lives, or change a very tiny part of the lives of many people. Find a competitor who has stopped innovating because they have a monopoly on a market and fight tooth and nail to break their monopoly by providing a superior service. Pick a fight and don't back down. People don't give up after 2 to 4 weeks if they're passionate about something.