Most of the time when I'm feeling overwhelmed and depressed is when I'm trying to please everyone. There comes a point where you realize, some people you just can't please. Some people are just toxic and they want you to be as miserable as they are. They try to guilt you for being happy! The saying "misery loves company", well it's true!
The best thing for me to do, is just do what I can, when I want to, and go on. If I stop and think about everything, I'm frozen in my tracks with anxiety and can't do nothing! Another thing that helps me is to always have a dream. No matter how big or small, I've got to have something going on in my head I'm excited about! For me it's just silly things like, making a garden, starting new flowers, researching ways to make a greenhouse, hatching chicken eggs in the incubator, etc.
Mind over matter helps a lot too. If I feel anxiety coming on, I try to get real busy doing something else, even if I have to force myself. Also I recite the Lords Prayer over and over in my head when things are out of my control. And I pray every night and thank God for the roof over my head and the food I have to eat and all the blessings he's done for me that day.
I have a friend that sits in her back yard everyday all day long and pines over her sister that was murdered several years ago. I want to shake her and say, let the past go and live today. She doesn't see why her marriage is a shambles, her husband is frustrated, she needs to let it go and be happy with what she has in the here and now!
Ok, enough rambling, I have to get busy!