Quote Originally Posted by lifeinsteps View Post
Definitely use whichever you are the most comfortable with.

If you're most fluent in French and are used to speaking in it more often, use that. You are simply telling yourself, after all.

Heck, it almost seems to me like your mantra could be gibberish if you personally still interpreted it to mean whatever you would want a good mantra to mean.
This is interesting but it makes sense, if you really feel the intention behind it I guess you can use anything you want.

Thank you all for your advice, I think I will stick with english as it is easier to express some key concepts related to lucid dreaming in english. Hopefully I will get some results after practicing consistently for a few weeks.