Theme
The theme of Bud, Not Buddy is never give up. Bud always remembered what his mother told him about when one door closed another door always opened, and he never gave up. He knew if what he was doing was not working out, he would try something else. In the end, it helped him find his family. So, if you want something, keep trying. You may have to try different things to get the result you want, but you have to keep trying.