Here are some justifications for justifying your lack of productivity:
Doing nothing is a skill, and like any skill, it requires practice. The more you practice doing nothing, the more you'll become an expert.
Taking care of yourself is essential, and justifying your lack of productivity is a form of self-care. By doing nothing, you're taking care of your mind and body.
Justifying your lack of productivity is a form of creative expression. You're creating a masterpiece of nothingness.