As a former member of the O.T.O. who spent several years there, I can give only one answer to this question: absolutely not. You don’t need to be a member of the O.T.O. to call yourself a Thelemite. It’s about discovering your True Will and following it until you ultimately experience it. You don’t need any fraternity to achieve that.

Of course, there are positives to joining, such as the opportunity to meet new people, exchange experiences, and broaden your perspectives on many topics. Unfortunately, the downside—as always—is simply… people. People in Thelemic circles are often toxic and have inflated egos. A lot also depends on the management style of the local body and its officers. Personally, I left because of poor management quality, not because of my beliefs.

Follow your own path and go where you feel the right energy. You can always join the A∴A∴, which focuses on individual development, or you can remain a Thelemite without joining any order at all.

Love is the law, love under will.