My stepmother told me she was worried when she got married in the mid-1930s because she thought a time would come when she and her husband would have nothing else to talk about, would have exhausted all conversation topics :-)

I suffer from having trouble finding words and use to get very frustrated in T because I literally had no words; she had to teach me words; words for feelings I had but couldn't describe, etc. I had to learn to "talk". It was scary because it would take me a long time to formulate what I needed to say and I was afraid I'd be interrupted or get it "wrong" or T would get tired/bored and be done with me, etc.

But there's much more depth to you. I don't know if you ever feared a bottomless pit getting you but that's sort of like the fear that one will always be angry or always be sad, etc. which some T's explain one's "capacity" for the opposite is shown by how angry, how sad, etc. You can't have joy if you can't have sorrow, for example. I have a theory that the bottomless pit one is afraid of falling into is actually one's own wonderful depth and we're just afraid of how "large" and complex we are. Remember how scary therapy was at the beginning. You're at that place again in the spiral.