under normal daily living my moods change from moment to moment. example if I see something I like and enjoy my mood is elevated to happiness, contentment, if something happens that I dont like I get angry, if I am planning something for the near future I get excited.... short version my senses take in what I experience and then my mood changes. sometimes I can change moods thousands of times a day just because I am having the kind of day that is very active, stimulating of my senses. other days I can remain very angry or very happy or sad or what have you depending upon whats going on in my life. just turning on the news some days is a roller coaster ride of emotions/ moods.

that said I do have many mental disorders where if I am going through my mental disorder problems my moods will be erratic. for this I contact my own treatment providers who do treatment adjustments/ changes that helps stabilize my mental problems symptoms.

my suggestion is contact your treatment providers, they will be able to diagnose whether this is normal for you or part of your mental disorders and get you treated so that it no longer causes you problems.