At the end of "Flowers for Algernon," does Charlie feel better or worse about himself?

Even though, at the end of the story, Charlie loses his new found intelligence, he retains a healthy sense of self-worth.

"Even after Charlie returns to his previous subnormal level of intelligence, he has learned to be understanding of the failings of others because they are "not so smart like you once thot they were." Although the experiment has failed, Charlie Gordon has not."