I don't, actually.
I do make the occasional impulse purchase, of course, but usually I figure the yarn will be there for awhile and I can always order more if I want. Impulses usually pass.
But I also work for Rachel, and against her yarn I am powerless.
It's practically all one of a kind. There is no ordering more.
I see her yarn. I want it. I need it. I keep buying it.
I am all impulse.