Beware the ego.
It will do anything and say anything to keep you as you are.
It will use fear and pain to keep you meek and compliant.
It will use your brain to twist logic, fabricate outcomes, and construct rationale for why you must remain the same.
It will try to trick you, and have you fight it with itself, which will only strengthen it.
This is called "forcing" or "acting", and it doesn't work, here or anyplace else, because it is paradoxically the supreme manifestation of the ego.
"Letting go" is a surprisingly accurate description of what we must do. Just stop thinking, acting, and forcing yourself to do things and act automatically, on instinct and emotion.
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I had a thought, but it might just be my ego defending itself
A man who can [easily] force himself to do things, regardless of his feelings and regardless of how hard, painful, or scary they may be, is truly without limits.
I find myself wondering if we'd be better off with one of those wickedly strong egos, rather than this "au naturel" approach we're currently pursuing.
Requiring the blessing of our instincts and appetites before taking action could make us vulnerable, or at least severely limit us.
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It depends though. If having strong masculine instincts makes you utterly and contemptuously immune to the seductions of safety, comfort, and ease, as well as to the threats of difficulty, pain, and fear, then just having instinct would be enough.
If not, then I'm certain that you would need an equally strong ego to keep you going when your instincts falter in the face of temptation.