Every three years? Yup because I think I know what's causing the main issue. I have a strong feeling that the professional that I went to see (same guy as three years ago) is right. The last time this happened was just about three years ago. And my point? (and his?) - think of winter, little sun (yes I know it's South Africa) and depression.
You cannot justify with me my friend. Whether you have lots of sun or a little sun, you make the choice to react to circumstances surrounding you, that includes the weather.
If you have depression and it is kicking in, then see your Doc, perhaps he can help you over the hump... If the sun is not shining, turn the lights on brighter... If Winter dragging on is wearing you down, think tropical... Go on youtube and search for videos filled with sunshine and rainbows.
Change your perspective, change your thinking, change your mood
It is all up to you and you alone.
(((((Hugs))))
May All Who Seek To Take My Life Be Put To Shame And Confusion; May All Who Desire My Ruin Be Turned Back In Disgrace. ~Psalm 40:14~