About the productive use of nightmare energy: how intuitive would you say it'd be for someone who is an anxious wreck and often has nightmares but hasn't really explored harnessing it themselves?

I ask because I've been working under the assumption that like, culturally speaking, the populace of Reverein is more likely to encourage the use of dreamotion, and using nightmare energy is this niche thing people know you can do, but you're less likely to find people willing to talk about how you can do it, you know? So I'm not sure how much information about the subject is ICly available just in general if a character hasn't participated in a nightmare energy plot already. If I'm wrong in this assumption, please let me know! I didn't see anything about it on the game info page, but maybe I wasn't looking in the right place.