Haber (“to have”, in the grammatical sense, and the root form of he, has, ha, hemos, etc) comes from the Latin for habere, meaning “to hold.”
From the same root, we get the English word habit. What is a habit if not something you hold so dear that you do it all the time? We also get prohibit (the same root with the prefix pro meaning “away”). What is a prohibition if not a habit that you’re trying to stop?
The h‑b root is so obvious in all, it’s almost not worth mentioning. Almost!