I found this video fascinating, for me it helps to explains some of the "peak to trough" that many people experience in day to day life. I see it as a waveform pattern with equanimity, like a line running through the middle.

The interesting thing is that at the peak or the trough, is where we are really feeling and experiencing and where the growth and evolution is most potent.

Maybe equanimity is what the soul is yearning for but peak/troughs are the reason we chose to be a part of the 3D?

Stickman Kev