Senior Congress leader in Assam, Bhupen Bora, on Monday announced that he has resigned from the party, ending his 32-year-long association with the grand old party. Speaking to reporters here, Bora said he sent his resignation letter to the party's central leadership at around 8 a.m. "I have resigned from the Congress. I have already forwarded my resignation letter to the central leadership," Bora said, adding that the decision was taken to protect his self-respect. "I have quit the party for my own self-respect," he asserted.