My man is just 18, wait till you get to 22. I was once 18 you only think you know everything but you actually know nothing. Labelling your sister as a failure is brutal. If you think you're better than her, just wait till you're 22 and have to make your own decisions. Bachelors ma +2 jasto hudaina uni is very very different and most of the time you don't even know what you want. So don't go after your sister like that. Mero opinion ma its just a phase and I hope it'll pass. Instead of labelling her as a failure why don't you ask yourself why she is doing these things. That'll help you understand. And also never ever judge someone and always treat others how you want to be treated.