It is important to write a declaration when writing your doctoral thesis which indicates what are beliefs about the subject are and how you would you like to prove them. In the declaration, you have to include controlled information and state what sort of methods you wish to employ. Basically, it acts as a sort of advertisement for your paper.
You must write the declaration after the entire paper is done so that you have a clear idea on how your paper progressed and which are the highlights that need to be included in your work. Make yourself familiar with the problem and then put in a little bit of extra effort to tweak certain selections so that they can be moulded into a good thesis declaration. The declaration should make it simpler for other people to understand the essence of your work.
Writing a declaration for your paper is not as easy task and you may have to prep yourself and utilise your writing skills to craft one that is efficient and easily explains your entire process and the ideas in just a few words. This will help you form a fully fleshed out declaration rather than a half-baked attempt at arranging all of your ideas in clear terms.
You have to understand that you are in control of your paper and so it is up to you to determine what must be included and what needs to go. This is the main reason why a declaration is so essential to fully comprehend your paper.