One thesis statement that can apply to Go Set a Watchman and To Kill a Mockingbird is that people must embrace taking action that might be uncomfortable in order to form their identity.

Both works are rooted in how people must take difficult action to define their identity.  In To Kill a Mockingbird, Scout recognizes the importance of taking acton.  Through Atticus's teachings, Scout develops empathy for others and, as a result, to stand up for what is right.  She understands this through living out Atticus's ideas such as “You never really understand a person until you climb into his skin and walk around in it.”  Scout shows this in how she comes to understand Boo Radley.  She goes beyond the misperceptions that surround Boo Radley.  Scout's actions are different than the rest of the world around her and this is why it is uncomfortable for her.  In doing so, Scout demonstrates that the need to take action to define a person's identity is difficult and often uncomfortable.

In Go Set a Watchman, Scout must respond to how Atticus has changed.  She is unable to remain silent when confronted with Atticus's beliefs about African- Americans.  When Scout has to hear repugnant statements from Atticus such as "The Negroes down here are still in their childhood as a people," she feels compelled to take action in defining herself. She rejects Atticus's racial viewpoints.  This is uncomfortable because of all that he has represents in forming her world view.  In  doing so,  Scout demonstrates the need to actively define one's identity can often be uncomfortable.  However, in order for a person to fully mature, it is shown to be necessary.