It is a matter of tuning. I'm sure you are familiar with harmonics and the way that notes resonate with eachother. When you play an A note on the piano, every other A note vibrates in resonance with it. If you play a chord, then you resonate not just the notes of the chords, but all the keys which are in the overtones.
Your emotions are a constant chord. Sometimes it is in such a harmony that it is simply 'flat', with no energy rising or falling. Other times they escalate like a rising interval or will deescalate like a falling interval. Sometimes we are in more of a major, consonant harmony. Other times we are in a more minor, dissonant harmony. Sometimes we are so dissonant our chord is unrecognizable.
The key then is to learn how to tune your instrument so that when it goes out you are able to bring it back to the desired tuning. This is the purpose, imo, of meditation, yoga, magic, etc. However, it must be remembered then that just like a musical instrument our own instrument doesn't always stay in tune and it will go out or fluctuate based on how we 'play' it.
Your emotions are a constant chord. Sometimes it is in such a harmony that it is simply 'flat', with no energy rising or falling. Other times they escalate like a rising interval or will deescalate like a falling interval. Sometimes we are in more of a major, consonant harmony. Other times we are in a more minor, dissonant harmony. Sometimes we are so dissonant our chord is unrecognizable.
The key then is to learn how to tune your instrument so that when it goes out you are able to bring it back to the desired tuning. This is the purpose, imo, of meditation, yoga, magic, etc. However, it must be remembered then that just like a musical instrument our own instrument doesn't always stay in tune and it will go out or fluctuate based on how we 'play' it.