When using a bearing pointer to fly a course to or from a station, the simple trick of pushing the head or pulling the tail of the needle will get you on course.
The basic concept is that you find a heading that will "push" the head of the needle to the course that you want to fly. Conversely when flying away from the station your find a heading that will "pull" the tail of the needle to the outbound course.
This simple concept is great to keep in your head while flying instruments. Whether you are flying an NDB approach, GPS bearing, or an RMI, you will be able to get on course and stay on course.