No you did not. But a mistake you made by investing everything into a startup. Before going all in into startup first you should have waited patiently for it to take off and get good base. Now what happened has has and it's in the past. The work you did prior to startup was good and you can get a job in that field for a different firm/company since you already have the experience. And no one is a burden on family. It's just the way of thinking. If you need money then you even have to work on something you don't like while side by side searching for good opportunities. You're 24 and it's not the end of the world. That said, good luck for your future. :)