Any advice/words of wisdom? Solo trip Minneapolis to Phoenix

This is my first time taking a road trip by myself and honestly my first time road tripping over 3 hours at once. Any advice or warnings of what to expect is much appreciated :) I will be going early May

This is my first time taking a road trip by myself and honestly my first time road tripping over 3 hours at once. Any advice or warnings of what to expect is much appreciated :) I will be going early May