It can be overwhelming to begin sorting through a day’s shoot, which may contain thousands of image files.
To make it easier, start ranking your images early in the workflow, beginning with 1 star for images that pass your basic requirements. Then filter your previews to only show 1-star images, and move on to assigning 2 stars, and so on. You will find that as you work your way toward 4 and 5 stars, you have much fewer images to deal with. This will dramatically cut your time selecting photos to be taken through final processing.
In my workflow, images that make it to 4 stars will be processed for printing or web. 5 star images are those that have made it into my portfolios.