Climbing in a dream usually reflects deliberate effort toward a goal -- the sense that progress is possible, but only through sustained work rather than a shortcut. A climb that feels steady can mirror confidence in your own pace, while one where you keep slipping back often names frustration with how slow the progress feels.
He must also have a certain Epoch or Radix from whence to derive, first his greater judgment, secondly his lesser judgment, when he intends a serious discourse. - William Lilly (1602.-1681.)