CREATE OR REPLACE PACKAGE PKG_TEST AS
  procedure do_very_little;
END;
/

CREATE OR REPLACE PACKAGE BODY PKG_TEST AS
  procedure do_very_little is
  begin
    dbms_output.put_line ('Do Very Little Called');
  end do_Very_little;
  
BEGIN
  dbms_output.put_line('Package Body Executed');
END;
/

Test Code:

begin
  pkg_test.do_very_little;
  
  pkg_test.do_very_little;
end;

Results:
Package Body Executed
Do Very Little Called
Do Very Little Called