The theme of kindness might also be present. For instance, a story about a stranger helping a lost child find their way home. It shows how a simple act of kindness can have a great impact on someone's life and can also be an inspiration for others to be kind as well.
Another theme could be self - discovery. There could be stories of people finding out their true potential. Like a painter who didn't believe in his talent until he was forced to create in a difficult situation and then realized how good he was.
One main theme is probably perseverance. Many of the stories might feature characters who keep going despite difficulties. For example, a person trying to achieve a fitness goal against all odds.