Whatever you have learnt throughout your education, you use it or produce it in your thesis in some or the other way. However, the sad part is that a lot of dissertations show the author in not a very good light. You can get here a reasons that can make your dissertation fall short of good quality
Bad writing: Not all of us are great writers. More so when prior to writing your dissertation you have not had much experience of writing. You may find yourself struggling a lot in that case. Remember that whatever field your dissertation belongs to writing is an integral part of it and if you feel that writing isn’t one of your strengths, you have no choice but to do something about it. Better than sitting over your problem, it is better to do something about it. There are a lot of places you could go for help. A lot of universities have writing centres or you may find a helpful colleague who would help you to improvise on your mistakes.
Weak foundation of thesis: remember that if the foundation of your thesis is not good the entire thesis is going to turn out bad. You need to have a strong foundation over which you can rest your paper. If you actually feel that you are struggling with the concept of your thesis and it lacks strength and originality, it is better to drop it rather than trying to build an entire thesis over a weak foundation. A smart move is to examine the quality of your thesis right in the beginning itself. The best way to know it is that while maintaining your originality, read through other theses in detail and identify the concept that has not really been thought before.
Defending a claim that is unsubstantiated: Never write on a topic that does not have significant research to support it. Often writers get pepped with the idea of writing about something exciting that is completely out of box and has never been discussed before. However, that logic appears more applicable when you are writing a brief concept paper and not an entire thesis. If you are so intrigued by a new concept that you cannot stop yourself from writing about it, you can mention it briefly in a section specified as “Areas of further Research”
