Since we are discussing knacks, I decided to put some thought into what my own would be. I agree with everyone saying it’s difficult! @.@
I decided to start from something that comes up a lot for me, and that is Anxiety. I overthink just about everything that happens to me, and I stress over situations that didn’t/won’t even happen (my cowriters can attest to this stressing nonsense). So I think my knack would be some kind of Prescience … the ability to see several possible futures just a few seconds forward, and the clarity to know which one is most likely to happen and act accordingly. How I wish I could actually do that!
What would your knack be? Let us know!