Silly question perhaps, but here we go. Assuming that you're a Thelemite, in what ways is your life better or more fulfilling than it was before you were a Thelemite? What have you gained from it?
I found out how to be happy - basically. 🙂
Thelemite or not, basically it is an experience a fundamental peaceful mind and therefore inner freedom regardless where or who you are that causes a more fulfilling and better life. The path of Thelema can help with that together with many other paths. Realisation is independed of a tradition. It is the effort (discipline) of the aspirant that brings him/her to this level.
My experience: The Law of Thelema simplifies everything. It's one brilliant principle, and infinitely adaptable. It liberates everyone and everything. There is a great quote from Crowley -- I'm sure someone here knows it by heart -- that says something like it is the greatest freedom and also the strictest discipline.
I've certainly become more confident and outspoken.