βOn This Day I Complete My Thirty-Sixth Year" is the last poem written by English poet Lord Byron. Lord Byron was one of the leading figures of the Romantic movement in literature and is still known today for his imaginative poems and debauched ways.
This poem was written in Lord Byron's journal, on the poet's 36th birthday. He recounts his earlier years, concluding that his previous enjoyment has brought him great pain. Now he is older, and his days are in the "yellow leaf," he realizes that he regrets the life he used to live.
Overall, the poem is fueled by a feeling of regret and maturity, as the speaker comes to terms with his past. His youthful days are now gone, and the speaker must deal with the consequences of his previous life, and the realities of responsibility, change, and death.