Rationalist Lent

As I un­der­stand it, Lent is a holi­day where we cel­e­brate the sci­en­tific method by chang­ing ex­actly one vari­able in our lives for 40 days. This seems like a con­ve­nient Schel­ling point for ra­tio­nal­ists to adopt, so:

What vari­able are you go­ing to change for the next 40 days?

(I am re­ally an­noyed I didn’t think of this yes­ter­day.)