Seems to me that at the core of "mental blocking" is having made a definite choice within oneself. A choice of alignment perhaps. Such a choice cannot be made until one is out of the mire of confusing and contradictory thinking. To get to this point we have to have gained enough knowledge to make a real choice for or against that is based on true knowing. This process can "grow" some seed within oneself that is in itself evidence of a real declaration of intent and alignment. This seed has strength that is not easily undone or overcome.
While we are still in the position of our core being...
In practical terms, we're not always faced with a life-altering, personalized 4D STS beaming attack. 'Attack' is usually more mundane, I think. Mental blocking in daily life is more about noticing our thought loops, beliefs and bad habits, and then having a clear Aim to overcome them. Then sticking to that Aim. That's the key - sticking with the aim, even if you don't like it, because you know it's good for you.
Mental blocking is also expressed really well by G's student J.G. Bennett. He wrote a
discourse on the first great liberation -
freedom from like and dislike. He puts everything together very well. I think what comes through for me is that the main thing with tackling any habit isn't just to stop the bad habit. There is a deeper spiritual realization, which is to use the struggle with the habit to find the Observer who notices everything about the situation - the Real 'I' within us - who has the power of Free Will choice to identify or not with an automatic impulse. I think that's what is at stake in tackling any habit - it gives us a chance to become liberated from the victim of the environment and slavery to the Personality. In that sense, it gives us a chance to discover who we truly are - Souls, not bodies.
Like sometimes I spend too much time on the computer. I noticed there is an emotional addiction there at times, and it sure doesn't feel good to be glued to the screen. So now I'm back to setting a timer for reducing screen time. This is a proactive form of mental blocking - to try to preserve my own nature when the online environment is just so damn interesting that I forget to pay attention to daily life.
So mental blocking can and probably should be used for anything - bad diet, reading goals, cold showers, working out, not reacting to some disturbed character who's trying to rile you up. It's just another way of talking about developing Free Will. And getting practice with smaller intrusions or habits should help establish the neural pathways for dealing with whatever larger attacks may be planned.
Like say a good-looking Nordic Alien comes up to you and says, "No, no, I swear I'm one of the good ones, let's go for a ride in my cool ship and I'll show you the cosmos."
Mental blocking!