Feeling of Dread

Have you ever felt a strange reluctance to do something, even if it is something that you actually like or have planned to do, for fear that it will end?

I tend to feel this way very often, and I seriously think I'm very weird.

Whenever I pass by the TV and its showing some serial drama, I'll actually violently avoid seeing or hearing any part of it, it's like a sudden feeling of detest or indeed, fear, of watching any serial drama. The problem is, when I finally did get to sit down and watch, chances are I'll like the drama very much and immediately try to finish the whole series.

Also, the phobia is even more serious if it's a show I've watched before. My sister was watching 冲上云霄 and Harry Potter on the computer, and I felt sharp feelings of dread whenever the shows are on, even though I have enjoyed them when I first watched them.

I thought about this problem, and I can't really grasp the reason behind my reactions, except that perhaps I am afraid to revisit how I felt when I first watched the shows, or I am scared of being disappointed by the shows, but neither really made much sense.

Lately, I am about to finish the whole series of Discworld books and I dread this fact very much. I am seriously going to be directionless for a period of time because this series had been what kept me purposeful for more than 8 months.
In fact sometimes I dread to start a new Discworld book even though I love the books very much, but I have the weird feeling of relief when I realise I have read quite a big part and am even about to finish the book, as if reading it had been a chore.
It's all very complicated and I can't imagine why this is so.
It's all terribly confusing.