A lot of this depends more on the interviewer than on you. If they are using behavioral questions they are probably looking for specific natural strengths or tendencies - not "you are good at things" but more like the you are passionate or energized about things. They know how these strengths map to job performance (hopefully) and want hire people who fit the preferred profile. Good interviewers understand the process and that there are different routes to the same destination - bad ones are checking off the boxes on the form.

You need to be able to explain why your strengths make you an excellent candidate for the job. To do that you need to know the specifics of your strengths and how you would apply them on the job. This is why you get questions like - tell me about a time when.... A good interviewer is looking for a specific example, not a hypothetical. This is when you get to highlight how you applied your strengths and skills and sell yourself as a good fit for the job.

Of course this works better (for you and the interviewer) when you know what your natural strengths are - what are the things at work that you could do all day and feel energized about. Are there things that you really look forward to at work - when are you "in the zone" and time just flys on by?

- Eric