If we take it as given that a busy and good photographer can make a dozen strong images in a year (as per Ansel Adams comments), it might pay to spend some time reflecting on the circumstances which led to those images. How many of them happened when you simply picked up a camera with no idea of what you were going to shoot, just wandering around some place?
Did you see something worth photographing and ran home for your camera and thus captured one of your best?
What percent were from an organized shoot - I'm going to place A to shoot subject B and I'm going to dedicate several hours if not multiple visits to do so?
Do you know what percent of your best images were made while photographing with someone else - perhaps company stimulates you to perform - or maybe it inhibits you - the answer to the question is quite relevant for planning future shoots.
How similar are your best images? - too much alike, close enough to be the start of a project, totally random, each begging for more work of the same theme?
Next time I'm going to discuss the problem of going with your strengths without simply being repetitive.