I've always been afraid of falling from high places, both physically and psychologically. First, there's going to be the injuries the fall causes. Next, there's going to be a need to retry. Psychologically, sometimes things just don't work the same. You become the kind of person you want to be, you gain certain traits, then you lose them, and you can't get it back anymore.
One thing about me is that I am possessive, but I am afraid of possessing too many things because I'm afraid of losing them. I was afraid to get closer to the people I like because I was afraid that I would disappoint them, bore them, and then make them dislike me. I was afraid of commitments because I was afraid I could forget. So I kept track of what I have, but there's a limit. I used to become anxious over things happening in my life. My activities, my friends, my personality traits, my passions, etc. But it's impossible to keep track of everything. Life needs spontaneity.
But possessions and personality traits and values and all these things are kind of like a psychological height. I may fall, meaning lose what I have, so why can't I gain it back? The answer must be that I can, just that I was too dispirited. The way to gain back what I have is to bounce back and just take it back, just like falling from a wall and climbing it again.
The same goes with problems, failures, and most things beyond reach, though there are times when we need to let go. It depends on the situation.