Do something every day that you don't want to do. This is the golden rule for acquiring the habit of doing your duty without pain.
Activate yourself to duty by remembering your position, who you are, and what you have obliged yourself to be.
What is possible is our highest duty.
Change this and that and try again. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum.