Respecting parents

Hello Rabbi
I wanted to ask, I smoke and my mother is very disgusted by the above custom and urges me to stop, and in the same matter I study in a Lithuanian yeshiva and I invest most of my time in Talmudic study and my mother wants me to study Halacha studies in the rabbinate track, my question is whether there is an obligation or interest in listening to her about this, and if there is no obligation I would be happy to hear an explanation of what the distinction is between the main mitzvah that a person must set aside his time to honor his parents (feeding him, clothing him, etc.) in which a person is obligated to set aside his time and his will for his parents, for a child to live a life that his parents want him to live in, assuming that there is no obligation for this, in other words why should a person dedicate his day-to-day life to his parents and not to his path, again assuming that there is a difference.