The rubbish like "If you really deeply care about something, you will do it" is quite representative of this armchair psychology type of thinking. I file this right next to "if you didn't want to be fat you would eat less, so you just want pig out and harm yourself", "if you did not want to be an alcoholic you would stop drinking alcohol, so you just want to live the life of an outcast", and "if you didn't want to be poor you would just be rich".
For a more rigorous exploration of the matter I suggest reading someone who spent decades studying the subject or procrastination, and not on his own person, but on the persons of thousands of people so afflicted - "The Now Habit" book by Neil Fiore. As it turns out telling someone "oh, you just don't want to do it, that's why you procrastinate" is more likely to hinder progress than result in change of behavior. However, there are plenty of other things that do change behavior for the better.
For a more rigorous exploration of the matter I suggest reading someone who spent decades studying the subject or procrastination, and not on his own person, but on the persons of thousands of people so afflicted - "The Now Habit" book by Neil Fiore. As it turns out telling someone "oh, you just don't want to do it, that's why you procrastinate" is more likely to hinder progress than result in change of behavior. However, there are plenty of other things that do change behavior for the better.