How can I describe a candidate attribute or behavior during an interview process regarding the following question?

• Tell me about a time when you were frustrated because you needed to do several things and didn't have time to do them all.
• Please describe the last time you struggled to maintain your composure.
• Suppose a co-worker confides in you about something they are doing that not only clearly violates organizational policy but may also, in the long run, harm the organization. How would you handle the situation?
• Typically, how would you describe yourself in regard to making important decisions?
• Please describe your most rewarding experience helping others in a work-related situation.

Please shares sources/references.