Do the first right thing. The easiest one on your list to accomplish. There! Well done! Now, pick the next right thing to do. Spend a day like this. Then the next. You’ll be shocked at how much gets done.
Sometimes, when I feel overwhelmed, I set a timer for 15 minutes. Ok, I do that a lot. It turns the chore into a game and makes it easier to do the task at hand. Try it. You may just have discovered the hidden key to your success.