If you are thinking of spiritual work with a word of liberating power (Munka, Uruz, Ansuz), I would recommend Waning Moon. Personally I would choose the sign of Aquarius.
However, mental work on the material level is also important. Some time ago I wrote my personal method for recognizing when something is a preconception of the Christian mentality:
https://ancient-forums.com/threads/...-from-christianity-my-personal-method.292690/
Anyway, see what's right for you. It's up to you.