Diary Of A Wimpy Kid Hard Luck Book is the story follows Greg Heffley as he battles a series of setbacks. The objective of the book is to show Greg's struggles and his attempt to change his luck by giving up control to chance. The mixture of Greg's struggles and his daring risk makes an interesting story. Creating a tone for the story and showing his genuine troubles is the character of greg heffley going on a losing streak. His closest buddy Rowley Jefferson's absence causes a dilemma and highlights the value of friendship. The middle school character of making new friends introduces the idea of change and adjustment. Readers are interested in this unexpected turn as they consider the results of his decisions. This character demonstrates the concept of taking risks and their potential effects on one's life.