Converting an image to black and white can often greatly strengthen it or even save it, but knowing when to do it can be tough. This helpful video will show how to quickly cycle between color and black and white in Lightroom and give you some tips for deciding which is better.
Coming to you from Anthony Morganti, this helpful video talks about how to choose when to convert an image to black and white. A good general guideline I learned a while ago was to shoot in black and white when you're trying to convey emotion and in color when you're trying to convey information. For example, a stunning mountain scene that shows off the sheer beauty and enormity of nature might be best in color as this augments the intricacy and splendor of the scene, while a lone tree in a field might be best in black and white, as this conveys the isolation. Also, note that if you're using a mirrorless camera, you can likely set the EVF to display in black and white. I frequently do this on my Sony a7R III; it makes it easier to read the light quickly and accurately. Just be sure you're shooting in raw, as the camera will likely make any JPEGs shot like this permanently black and white.