What does it look like to act according to The Spirit?

Christi walks us through Acts, chapter 4-6 to examine the disciples' actions and reactions. In the midst of problems, trials, and accusations, they didn’t get mad or mean. While their accusers ranted, the disciples stood strong. When threatened, they didn't get angry; they got bold. How can the church and we as believers act and live in Holy Boldness when faced with difficult circumstances?