Answer:
He relied on his patience and Athena's help
Step-by-step explanation:
When Odysseus returns to Ithaca where he is King, he returns in the form of an old beggar. His son Telemachus recognised him, but his wife Penelope did not, even if she spoke to him and he described Odysseus in great detail.
Odysseus found suitors for his wife in his house and they were drinking and eating and feasting at his expense. This greatly angered him but he kept his patience and bade his time before he struck.
He was aided by Athena who robbed the suitors of their wit and made them act horribly towards Odyssey - who was disguised as an old beggar - who later killed them all and was transformed back to his normal self.