personally when i read that book and instructions. its been a while, somewhat a year. sometimes i have equanimity and automatically love and compassion grow out of that, but my mind is unstable so i dont have equanimity all the time. and i am not going to forcefully try to have equanimity all the time. what this visualization can do when you visualize a loved one enemy and neutral person, is that with that you need to just relax and let go of grasping and clinging. with that comes equanimity. if you are trying to be forceful the only thing your gonna get is frustration on yourself.
and if you have aspiration to achieve enlightenment for the benefit of all beings, that is aspiration bodhicitta, if you put that aspiration into practice, like seemingly you have, that is action bodhicitta.
dont believe that you will magically with that books instruction achieve the perfect bodhicitta state. it takes years to achieve it. take it easy and develop the 4 brahma viharas and equanimity, that will take you far, since bodhicitta is nothing but overwhelming boundless love with no division or boundaries and judgements, we dont have that even to ourselves, so we need to learn to be kind and easy going and relaxed. and not worry , be forceful and stressful if our aspiration doesnt match with our expectation. when we let go of clinging and grasping and rest in silence and feel the love towards all being , and want to help them. you are there.
If the thought of demons
Never rises in your mind,
You need not fear the demon hosts around you.
It is most important to tame your mind within....
In so far as the Ultimate, or the true nature of being is concerned,
there are neither buddhas or demons.
He who frees himself from fear and hope, evil and virtue,
will realize the insubstantial and groundless nature of confusion.
Samsara will then appear as the mahamudra itself….