This short poem is a quiet declaration of freedom. The speaker says they are free, and then explains what that means: they can finally face the world as a genuinely authentic person. The word "finally" suggests this wasn't always possible, and that the speaker has spent time holding something back or hiding. We don't learn what changed, and the poem doesn't say. It simply announces the result.
The most interesting thing is the layout. The words are scattered across the page with big gaps between them, and the first word of several lines, "Am," "I," "Truly," "Happy," sits far to the left, almost like a separate message. Read down that edge and you get "Am I Truly Happy", a question that sits underneath the confident statement. That hidden question adds some doubt to the mood. On the surface the tone is relieved and hopeful, but the spacing leaves room for the speaker to still be wondering whether this freedom is as real as it feels.