An opening or entryway, and therefore, entry into a new stage or way of life; the threshold between conscious or unconscious material. If you are able to open the gate and enter, it suggests readiness and success, perhaps the end of a crisis time. If you have difficulty opening it, where are you stuck? If the gate is barred, it suggests that you are being denied access to whatever is on the other side (freedom)?
How are you restricitng yourself? A rusted gate may symbolize resources within yourself that you have not drawn upon for a long time.
See also door, fence, wall.