If it’s not scary, then that’s great! Even better.

The reason you keep thinking in one way instead of being able to switch to another way is because your thoughts have gone a particular route for years. As explained in the Buddha’s Brain book, which I linked to a few pages back, our brains adapt to certain ways of thinking. The more you think in a certain way, the more those neurological pathways will be strengthened, and the less you think in a certain way, the more they will be weakened. Like a stream of water going through a particular path, because that’s how it’s run for a long time. It’s difficult to all of a sudden force the stream to go to another direction. It takes time and effort and multiple times of interrupting one line of thinking and making an effort to direct the thoughts to another direction. The more you do it, the more the neurological pathways of a more positive thinking will be strengthened.

Just like going to the gym: you can’t expect to be able to lift a heavy weight just like that without any practice. It’s of course easier to not even try and continue sitting on the couch. It is very demanding to start training the muscles, but after a while, it will become easier and easier as your body will adapt to the new ways of being.