Well, it depends on the underlying cause of the mood swing. Such swing can be caused because of depressive disorders, bipolar or personality disorders, or even during the menstrual cycle or in menopause. Along with the above mentioned, CBT, specially mindfulness therapy, etc. have been proven to be effective to control mood swing.
Mood swings in the context of a bipolar spectrum disorder (as in those with a tendency to manic-depressive symptoms) can be managed by maintaining very consistent sleep habits, especially getting up time. Getting up early at the same time every day, including weekends, keeps you circadian rhythm timing stable. Getting up earlier than usual leads to decreased REM sleep, which pushes one's mood towards the manic end of the spectrum. In many people, this manifests as irritability. Conversely, getting up later that usual increases REM sleep which may contribute to depressive symptoms including fatigue, lack of energy, and lack of motivation.
For more detail, see the section "Sleep Patterns" in my essay, here: https://henry.olders.ca/wordpress/?p=1404
Your excellent question deserves a larger stage onto which the contributing replies may be displayed. I can imagine/feel the resulting benefits of individuals who, by learning from your collected information, may discover a renewed surge of confidence in their ability to be the boss of their own self. The discussion(s) you have generated has collected (in just five days) insights that can remove considerable pain from individual lives.
Thank you.
How do you Control and Manage your mood swings without drug therapy?
As I sit with your question I’m wanting to differentiate between Control and Manage, as the two may have significant and separate roles to play.
I want to draw out the social impact of the individual mood swing. Though it belongs to an individual, the resulting fallout of the swing is most likely reaching surrounding lives. What of the responsibility/opportunity/need of those in closest relationship with the mood swing? The events and responses could (in a private, respectfully close way) belong also to a few others.
And the thought of engaging the mood swing in its entire (potential) orbit without medication has large implications as well. By asking, we may be assuming that medication is not needed, or that if an individual tried harder and did something they could "get off medication”.
As I said, I believe your excellent question deserves a larger stage. You certainly have me thinking deeper on the subject, as do the previous professional, accurate and informed replies.
I will stay close by and hope to learn from your work.
All the above modalities are correct, unless the gut unbalanced such as what is called "Leaky Gut", or intestinal permeability. What this does, is do to the diet, allows the gut junctions in the small intestine to spread, and becomes permeable to undigested proteins and other foods that enter the bloodstream. This can cause inflammation, and trigger mood swings. I would first check to see if you are eating a diet rich in natural, wholesome organic foods, with fewer grains. No refined carbohydrates. If you have undiagnosed gluten sensitivity, this can cause the problem described, as can GMO's and other food additives. Since most of the nerves end up in your stomach, these affect the serotonin in your brain, and can send signals that are incomplete. This causes mood disorders, that so many MD's think are brain connected. They are, but they are connected to the gut, and diet as well.
You have raised most probably the most decisive question of mental health, i.e. mood science. Meditation (inward) and concentration (outward) are paramount to distinguish pathological stimuli and to eventually eliminate them by conscious action: stimuli----emotion/mood/feeling----reflection by meditation and concentration---conscious action---leaving the pathological circuit by activity.
We must live in peace with ourselves. Then there will be no reason for a bad mood. Most often, a bad mood is the result of the impossibility of realizing your intentions. For example, you have to do a lot of stupid work by order of the authorities, in this case you should not take it very personally and do it well. Dig your garden-bed best way, and the rest does not depend on you.