@Former-Member
The clearest way I recognise the need for a filter is through my emotional responses .... feeling hurt, angry, neglected, rejected, unappreciated .... and these are all negative things.
Rather than just blocking them out, it is important to ask the questions ....
Why did that comment / action / lack of response hurt me ?
Why did that comment / action / lack of response make me angry ?
Why am I feeling neglected / rejected / unappreciated ?
What can I do about it ?
Sometimes the answer to these sort of questions tells us that we have accepted responsibility for a behaviour that originated with someone else, and as such, the responsibility for how they behaved and what the outcome was belongs fairly and squarely back at their feet.
I can give you a simple example of that. If our ask someone to pass you something, and they throw it at you roughly, or plant it in front of you on the table in a hostile way, you have a choice as to how you respond.
You can calmly say "thank you" as if they passed it nicely, and give it no more attention .... this is using graciousness to rise above their action.
You can pick it up and throw it back .... this is using retaliation to express displeasure at how you were treated ...
You can stand up and walk away from the item as though it hadn't been given to you .... this is rejecting what you had requested as a way of rejecting the ungracious way it was delivered ....
These are all ways of dealing with, or filtering, the emotions evoked by the action.
Sometimes it's easier just to filter the people themselves, and not ask hissy people to pass you anything .... 😆