The tools nested under the Blur tool (Blur/sharpen/smudge) are the only set of tools in the tools panel without a keyboard shortcut. You can however assign a shortcut to them by pressing Ctrl Alt Shift K (Mac: Cmd Opt Shift K) to open the Keyboard Shortcut editor. Choose "Tools" under the "Shortcuts for" drop-down and scroll-down to those tools and assign a letter to them. Your best option for these is the letters K and N since they are available without having to change any other shortcuts.
Learn how to use Photoshop to fix portrait photos with a distracting background. This effect is easy enough for the beginner but works exceptionally well. Many professional stock photographers use this technique to enhance their portrait photos and increase their sales. Find out how you can make your portrait photos look better with this fast Photoshop tutorial.