Historian.el

Historian.el stores the results of completing-read and similar functions persistently. This provides a way to give completion candidates that are more frequently or more recently used a better position in the candidates list.

Usage

Depending on how you've configured use-package, setup could be as simple as:

(use-package historian)
(use-package ivy-historian)

(use-package ivy
  :init
  (ivy-mode +1)
  (historian-mode +1)

  :config
  (ivy-historian-mode +1))

How do I know it's working?

You can try the following

(setq ivy-historian-recent-boost most-positive-fixnum)

Then recent candidates should unconditionally appear first, if ivy-historian is working.