Today's tip is a VERY VERY quick tip ... so let's get right to it.
When cloning / healing in Lightroom you'll sometimes end up needing to clone / heal at a spot where you've already done some cloning / healing.
And the Lightroom keeps selecting that clone in stead of letting you make a new clone.
Well, here's the tip: Press H on the keyboard, and Lightroom hides all of your clones, and by that you can then make some new ones in that same area.
And when you're done, you simply press the H again, and they're all back.
Press H on the keyboard
Simple ... I told you
Niels is on Twitter as @steinmeier