Hello & Welcome, Onthemove!
There's the nail. There's the hammer. There are the arm and hand. But, what's wrong? In my mind I can see my hand grasping the hammer and beginning to build, but my brain doesn't seem to want to respond to the vision. My brain just won't send the right signal or combination of signals to my hand and arm to start the process. What's going on?
I don't really know what's going on, but "depression" is the usual label for the whole mess.
Maybe you would do best to try to change only one thing at a time. Or, maybe you need to go for a radical transformation of everything all at once. Different approaches help different people. It seems you're already on the road -- that's a great accomplishment. We'll listen and support you as we can.
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My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.