Measuring - how often?

How often do you guys get the urge to measure your tackle?

-Is it better to wait for a long period of time and then measure?
-Does measuring after every session in hope of gains just dampen your motivation when you discover you haven’t gained anything in just 1 hour!

Personally, I measure every couple of months.

I realize that it will take a while to achieve my long term goal, so I wait so I can show measurable gains.

(.25 inches in 5 months)

How often do I get the urge? About once every few days. However, I have the will power to leave the ruler alone for two months.