In Things Fall Apart, Okonkwo has a tragic flaw. His tragic flaw is his fear of becoming like his father. Unoka, Oknokwo's father, is lazy and loves a life of leisure. Okonkwo deals with his fear on a daily basis. He becomes obsessed with hard work in his determination to never be called weak or woman, as did the children call Okonkow's father.
Okonkwo is driven by his passion to excel and become a leader in the community. He allows his masculine desires to overtake him. He becomes abusive to his family, insisting they work as hard as he does.
Ultimately, Okonkwo allows his fear to totally consume him. He is so afraid that he will lose his title until he takes his own life. In the end, he dies without a proper burial, just as his father died without a proper burial. Okonkwo allowed his fear to take contol of him. His life ends in tragey.