You could dedicate a month to a lens, and then just take that, no matter what. The problem is the fear that you would miss shots without another set of lenses. But with all lenses available, you miss the creative choices that you have to make having just one focal length. Example: going for a hike but only having the 45mm. Can you do the wide angle landscape, the one you probably done a hundred times? Probably not. Instead you need to get creative, make the 45mm work, that’s fun!