Writing an essay in the UPSC Civil Services Examination (CSE) mains is a crucial part of the exam, and requires a strategic approach. Here are some tips to help you write a successful essay in UPSC CSE mains:

• Understand the requirements: Read the essay topic carefully and understand the requirements of the question. Make sure you are answering the question asked, and not veering off-topic.
• Plan your essay: Take some time to plan your essay before you start writing. Jot down your main ideas, key points, and supporting examples. Organize your thoughts and create an outline for your essay. This will help you stay focused and on track as you write.
• Use a clear and concise writing style: The UPSC essay is not a creative writing exercise. It is important to use a clear and concise writing style, and avoid the use of overly flowery language or excessive jargon.
• Be balanced in your argument: While presenting your argument, make sure you are presenting a balanced view of the topic. Avoid being too one-sided or biased. Present both sides of the argument and make sure you are supporting your claims with evidence.
• Use examples: Use relevant examples to support your arguments. This will help to make your essay more convincing and credible. Make sure your examples are well-researched and accurate.
• Use headings and subheadings: Use headings and subheadings to organize your essay and make it easier to read. This will also help you to stay on track and ensure that your essay is well-structured.
• Proofread your essay: Before submitting your essay, take the time to proofread it carefully. Check for spelling and grammar errors, and make sure your essay is well-structured and makes sense.

Remember, the UPSC essay is an opportunity to showcase your writing skills and demonstrate your ability to analyze complex topics. By following these tips, you can write a successful essay and improve your chances of success in the UPSC CSE mains.