If this site will not contain psychology or mental-hacks, the "habits" tag should be deleted. The presence of it is misleading and conflates the scope of the site.
I agree with this completely. If a new user sees the habits tag, they might assume that they can ask questions about dealing with habits. Right now, no one should tag anything with habits or edit anything about it which might encourage people to use it even more. The one question that is tagged with habits right now should be deleted ASAP (we'll have to wait because it was just asked) or we can retag it, but I don't really think we have an tags that fit the questions.