That's the predominant thought going through your mind. You are hanging on by your fingers. You're trying to grab hold of something, anything, that will keep you from falling.
You keep going thinking it has to get better/easier, but it's only getting worse.
This is unfamiliar territory. This isn't, stay awake at night anxiety. This is, I can lose everything fear.
Your rubber legs are wobbling, your blood is freight training through your chest. Your current toe-hold is slipping, but no other is in site. Safety up ahead is too far away to see.
Just as your fingernail grip starts to slip, you cry - "I don't think I can make it!"
And an encouraging voice calls from below - "You can do this. Look up above to the left- see that metal ring? You can get there. It'll give you a good foothold so you can catch your breath. The whole left side is much easier."
Time stops as you think - "and you're just telling me this now??"
Funny, isn't it? How life imitates life?