If you've been tasked with writing a thesis paper for your PhD level or Masters level candidacy, then you need to know that it is quite a bit different from writing the standard essay that you've probably gotten quite used to it throughout your academic life.
Granted, college level essays are worlds apart from high school level essays however here again, a thesis paper is something that is quite a bit different than a college-level essay.
And as such, you need to make sure that your thesis sentence is the best it can be before anything else.
One thing to consider regarding your thesis sentence is that it's not something that you can just come up with out of thin air.
It requires a lot of research and line of questioning regarding your process, data, and sources.
In short, you want to make sure that you have done sufficient research and thinking about your data before you start writing your thesis sentence.
To do it the other way, you run the risk of being unfocused or not making any sense at all.
This is not something that you want especially something as important as a thesis paper.
One thing to consider is that your research and findings, should ultimately guide your thought process and as such have quite a lot of bearing on your final thesis sentence.
The last thing you want to do is to try to come up with a thesis sentence and then make the data fit.
Not only is this confusing, it can lead to an inaccurate paper as well as the temptation to do certain things that are considered unethical.
One other tip to consider regarding a thesis statement is that, as this is going to be what the entire paper is based around, you need to give it sufficient time to be revised to ensure that there is no ambiguity and that it actually makes sense.
Therefore, you'll be most likely doing several revisions before you write your final paper.
As the thesis statement is considered the guiding light so to speak, you need to get the proper care and attention it deserves.