Think About The Good Times
Feeling down refers to feeling sad or even depressed.
you are feeling good about yourself
1. Happy feeling 2. Sad feeling 3. Nervous feeling
Even when I'm feeling down and it seems you are far away...
They are feeling the effect of friction.
The flu left me feeling dizzy. Feeling dizzy, I sat down.
"Feeling blue" IS an idiom - you cannot literally feel the color blue! Feeling blue means that you're sad.
It implies that the corners of your mouth are turned down, which is what can happen if you are sad.
if your sitting down
The metaphor "down in the dumps" means feeling sad, gloomy, or depressed. It is often used to describe someone who is feeling low or unhappy.
The word you might be looking for is "dejected," which means feeling sad or disheartened due to being put down or discouraged.
Kenwyn House & Louse Down & Tiffany Page - Love Is A Feeling