If I understand you correctly, what you´re referring to is a habit. So "la costumbre de hacer algo" is "the habit of doing something." For example: Recently, I have gotten into the habit of waking up early. "Tener la manía" is to take it a bit further; it's an obsession, fixation, or infatuation. As an example: I am obsessed with keeping all of my clothes folded.

Direct translations is: I have a habit of... [include habit here] -Native US English speaker