Q: How do you know if you are at least BEGINNING to "get it" and make some serious progress in your pursuit of tai chi mastery?

A: When you really, really WANT to practice the form, when it pulls and attracts you more than any competing activity such as TV or eating dinner or online poker or what have you, then you are getting somewhere! When you suddenly notice that practice is not just another task, routine, chore or bore, when you just wanna do that form and keep on going... you are beginning to get it.

When you start wanting to shout:

TAI CHI CHUAN : Feels So Good The Feds Should Make It Illegal!
　

... then you are truly making serious progress.