You definitely do have to fulfil your household responsibilities. If you do not fulfil your responsibilities, you would be like the sannyasis. Because they do not fulfil their household responsibilities, they are called those who belong to the path of isolation, those who practise hatha yoga. Whatever is taught by sannyasis, it is called hatha yoga, whereas you are studying Raj Yoga, which is taught by God. The religious scripture of Bharat is the Gita. You are not concerned with the religious scriptures of others. You live at home with your families and renounce everything for just one birth and you receive the reward of that for 21 births. Their renunciation is limited and they practise hatha yoga. Your renunciation is unlimited and you practise Raj Yoga.