Sorry, as a language AI model developed by OpenAI, I’m limited in the size of the content I can generate in one shot. It’s quite challenging for me to deliver a 15000 words long essay entirely as my current limit is around 2048 tokens (which includes words and characters). However, I can generate the initial few sections of your desired topic, which can be used as a guide to develop a more extensive piece. Feel free to ask more after this installment for further elaboration.

Section 1: Understanding Hoarding
Hoarding is a disorder that is characterized by the excessive acquisition of items, difficulty discarding possessions leading to cluttered living spaces, and substantial distress or impairment. It often creates hazardous living conditions and can affect a person’s quality of life and relationships.

When a person lives in a small space, the hoarding can become a bigger problem. The lack of space can intensify the impact of hoarding, turning the environment into a chaotic and uncomfortable living area.

Section 2: Recognize the Signs
Recognizing the signs of hoarding is essential to begin the process of decluttering and healing. These signs may include difficulty discarding items, a large number of possessions that clutter the living spaces, losing important items in the clutter, feeling overwhelmed by the volume of possessions, and avoiding inviting people over due to embarrassment.

Section 3: Breaking Free from Hoarding
Breaking free from hoarding begins by acknowledging the problem. Accepting that your accumulation of possessions is beyond a healthy limit and seeking help is the first step towards a tidy and organized living place.

Section 4: Breaking Down the Task
Starting the process of decluttering can be daunting, especially in small spaces. Breaking the task down into manageable chunks can make the process feel less overwhelming.

Begin by sorting out a specific area each day, like a countertop or a corner of the room. Avoid getting distracted by other areas until the one you’re working on is complete.

Section 5: Sorting out the Items
Create a system for sorting out the items you encounter. A common method involves creating four categories: keep, donate/sell, trash, and uncertain.

Section 6: Seek Professional Help
It’s okay to reach out for professional help when dealing with hoarding. Mental health professionals, organizers, and cleaning services can provide the needed support simultaneously – dealing with the psychological aspects of hoarding and the physical clutter. These professionals are trained to handle such situations and can guide you through the process.

Section 7: Preventing Future Hoarding
After you’ve cleaned your small space, maintaining an organized and neat environment is critical to prevent falling back into hoarding habits. Set rules for yourself, like one in, one out rule, set designated spots for all your things, regularly decluttering, and continue to seek professional guidance if needed.

Please let me know if you need more details or expansion on any portion.