The pendulum of emotions is about training our emotions. Why should we train them? We are then less open for manipulation and thus it is easier to stay in our own power.
The pendulum of emotions works by alternately bring about so called negative and so called positive emotions on purpose and in the end come back to neutral where we find our balance.
Exercise: Feel Love ... stay with this feeling for a little while ... then feel anger and stay with this feeling for a while ... then feel joy ... then fury ... then harmony ... then hate ... then bliss ... and then come back to the 'medium line'. The 'medium line' means being neutral in between positive and negative, but none of it. Be in the middle of it and feel the silence.
This state of silence gets more intense the more your pendulum goes in both directions, prior to coming back to the medium line. Sense what remains on this line. Sense the deep peace within, the silence, the power, etc. Sense everything while being on this line.
This exercise can be useful in order to ease our everyday life as well. If an extremely emotional situation comes up, we are then easily able to get back to neutral very quickly. We are in charge of our emotions and thus find balance and are in control. Then it is not any longer that other people determine whether we are e.g. afraid or happy.
Within our fun based society it is often suggested that positive emotions are needed all the time in order to be happy. But a closer look shows how exhausting it can be to live in permanent ecstasy. And likewise it can be quite exhausting to live with negative emotions like fear all the time, although there it is more obvious. However, actually both takes effort and energy. Whereas silence and peace can be found once we are balanced, like being on the medium line as mentioned before.
This is not about judging emotions. We are here to experience all sorts of emotions and let them be part of our lives. It is more about being in control instead of being controlled by them. It is about becoming captain of our ship again and determine which way to go.
Especially fear keeps us within a low frequency. This low frequency deprives us from living our full potential at least if we are permanently subjected to it. Almost all negative emotions, if followed to their origin, are based on fear. We fear to loose our belongings and thus fight for them. We use violence because we are afraid. Fear has the lowest frequency as opposed to love that has the highest frequency within the spectrum of emotions.
In order to overcome fear there are many different techniques. One is to open up to our fear by consciously sensing it and letting it get bigger and bigger until it dissolves.
Exercise: If fear comes up, then first notice it, try to become aware of it, instead of being carried away by it. Secondly, do not push it aside. We have a tendency to push it aside. By doing so, we avoid the fear, but it remains subliminal and stays there, sometimes unnoticed. But if we sense it, look at it, welcome it, give it space ... then it eventually dissolves.
Thus, we delve into the fear and let it be, we sense it completely. Let the fear get bigger, as big as the room you are in, and stay with that for a while. Then let the fear grow even more. Let it be as big as the entire country. Stay there for a while. Then let it grow as big as the entire planet, and stay with that for a while.
Then, let the fear get as big as the entire universe ... if we have felt the fear completely then we imagine it to dissolve into light and love and this light and love becomes one with the universe. Hand it over to the universe. Let it be light.
Be aware that our body and our cells deeply stored the fear and it takes a purification process to get it all out of our DNA. It has been there for centuries forwarded from generation to generation.

Fear is the energy that contracts.
Love is the energy that expands.