I'm glad the author is introspecting, but I think this is a bit of a misdiagnosis, or maybe an incomplete prescription. First, being boring to others is nothing to worry about -- let them attend to their own likes and dislikes -- it's not your job to thrill anyone. But the author seems to be using boring to describe being limited by fears of various kinds. Well, that's right, it's not good to be bullied and caged by fear. But it's not enough to just say you should banish fear -- you need the stuff that will banish it. You do that via, for lack of a better term, spiritual cultivation, i.e., you learn to recognize the goodness in yourself and protect and nurture it consistently so that it can grow large and strong. Fear and many other unhelpful states of mind cannot exist in the presence of your goodness, if it's strong enough.
Here's my favorite method of self-cultivation: https://library.dhammasukha.org/uploads/1/2/8/6/12865490/the...
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