Somebody wrote in a book many years ago, that when you go up a ladder, you cannot continue to stand on the lower step.
When you go up, you have to lose the support of the leg that stood there.
Once I was climbing a ladder, a very high ladder, with a friend.
And he got scared, phobic, in the middle.
We were a few stories above the ground.
And he couldn’t move, up or down. He was frozen.
Because on a ladder you have to give up your perch on one step in order to get to the next step.
So change always means losing one thing, and getting another thing.
–Rabbi Adin Steinsaltz
–From an interview with Rabbi Adin Steinsaltz in Parabola Magazine