Are you preparing for an interview? Behavioural based interview/situational questions are a good way to gauge if a person would be the right fit for a position.

I would suggest you look back to your last position and think of times when you had to work under a tight deadline, or were handed a project that was beyond your scope of experience, or when you had to collaborate with co-workers who were not team players. If you ever experienced little things that appeared stressful at the time, but the end result made you feel like, "Yay, I did it!", then you've overcome obstacles.

You might want to ask the person who is interviewing you if they want you to use a work-related or personal experience.

Please don't make something up!