Here is a master class for those who still can not distinguish simple academic writing from a high-level academic writing.
 
What is a thesis? It is your personal original idea designed into a logically organized and extended research work. The key definition that clarifies what a thesis is should be understood: you are the one to scan the field of study and find that blank spot that is still little researched, or not investigated at all.
 
What is a thesis? A thesis is a research conducted on individual basis. Your scientific advisor can be the one to slightly guide you and make basic corrections. Still, he will not look for sources or write chapters instead of you.
 
What is a thesis? A thesis is a thorough work with sources. And here you do not follow the published and acknowledged theories blindly. You study them critically. Some of them you take as reasonable, others can claim out-of-date or incorrect. What is a thesis? It is your research, and as long as you debate with scholars and introduce strong arguments, your positions are strong.
 
What is a thesis? A thesis is a big draft with many gigantic and tiny arrows pointing at different directions and referring to different parts of the text. It is hundreds of footnotes and endnotes, exclamation marks and questions. What is a thesis? It is a complicated process of combining both existing theories with your personal findings and looking for new truth.
 
What is a thesis? A thesis is sleepless nights and constant headaches. It is the time of weird books and dreams at night that all boil down to your main question. Thesis writing includes regular visits to the dissertation advisor and libraries. Still, it is fruitful if done correctly. A thesis opens many doors, offers many opportunities, and brings new knowledge. It is prestigious.