Apart from what others have suggested, what you can do if you have a fixed list of files you want to quickly access, you could manually define keybindings for them. I have four main files where I capture things, so I define a submenu that allows me to access them quickly:
(note: I got this idea originally from Sacha Chua's https://sachachua.com/blog/2015/02/learn-take-notes-efficiently-org-mode/)
First, I define a helper function to define keybindings that open files. Note that this requires lexical binding to be enabled, so that the =lambda= creates a closure, otherwise the keybindings don't work.
#+begin_src emacs-lisp
(defun zz/add-file-keybinding (key file &optional desc)
(let ((key key)
(file file)
(desc desc))
(map! :desc (or desc file)
key
(lambda () (interactive) (find-file file)))))
#+end_src
(note #2: the map! macro is Doom Emacs-specific, should be replaced with `bind-key` or equivalent if you are not using Doom)
#+begin_src emacs-lisp
(defun zz/add-file-keybinding (key file &optional desc)
(let ((key key)
(file file)
(desc desc))
(map! :desc (or desc file)
key
(lambda () (interactive) (find-file file)))))
#+end_src
(note #2: the map! macro is Doom Emacs-specific, should be replaced with `bind-key` or equivalent if you are not using Doom)
Now I define keybindings to access my commonly-used org files.
#+begin_src emacs-lisp
(zz/add-file-keybinding "C-c z w" "~/Work/work.org.gpg" "work.org")
(zz/add-file-keybinding "C-c z i" "~/org/ideas.org" "ideas.org")
(zz/add-file-keybinding "C-c z p" "~/org/projects.org" "projects.org")
(zz/add-file-keybinding "C-c z d" "~/org/diary.org" "diary.org")
#+end_src
This results in a submenu bound to "C-c z" which looks like this, and which allows me to quickly open my files:
--Diego