After describing the daffodil's beauty, he proceeded on to tell about the beauty of its background and the nice setting it made on the daffodils. At last, after his long gaze, he suddenly asks himself that what does all those meant to him and how it will benefit him and then left the place. But later, he realized how the picture benefitted him and how it made him relaxed when alone.
I think that this poem is wonderful as it lets people love the nature and understand its real beauty, more nicely. It also lets us understand how wonderful God's creations are and in what amount we deny them. In the last part of the poem, the readers learn the importance of nature and also know about the feelings of the poet.