Feeling down and not knowing why feels so strange, doesn't it?
Maybe look a little deeper, you may discover a trigger. Anger, sadness, frustration can hide behind feeling down, along with other feelings.
You offer everyone here great info., insight and advice.
Your contributions to this community are huge.
It sounds like you truly love your family and work hard to support them financially and otherwise.
You have a lot going for you!
You are not alone in feeling down. I am stuck in it, too, waist-deep.
I hope yours can be easily resolved.

WC