Shape your topic so that you can get straight to the "meat" of it.Being specific in your paper will be much more successful than writing about general things that do not say much.Normally you will continue to refine your thesis as you revise your argument(s), so your thesis will evolve and gain definition as you obtain a better sense of where your argument is taking you.
Use your own words in thesis statements; avoid quoting.
Crafting an original, insightful, and memorable thesis makes a distinct impression on a reader.
To avoid misunderstandings, be as specific as possible.
Compare the original thesis (not specific and clear enough) with the revised version (much more specific and clear): The thesis statement should do more than merely announce the topic; it must reveal what position you will take in relation to that topic, how you plan to analyze/evaluate the subject or the issue.
The thesis will inevitably change as you revise and develop your ideas—and that is ok!
Start with a tentative thesis and revise as your paper develops.
In short, instead of merely stating a general fact or resorting to a simplistic pro/con statement, you must decide what it is you have to say.
Tips: Do not expect to come up with a fully formulated thesis statement before you have finished writing the paper.
Don't settle for three pages of just skimming the surface.
The opposite of a focused, narrow, crisp thesis is a broad, sprawling, superficial thesis.