The Civil Services exams are attempted by many people of India, who are aspiring to be civil servants in the country. First is the preliminary stage of exam, by clearing which you move on to the main exams. The final stage is the interview conducted by the UPSC board, also called the personality test. Needless to say, each stage requires utmost dedicated preparation and a clear-cut strategy to clear them and get a good rank. 
The very first attempt of the Civil Service aspirant is a very crucial one and that is the shot in which one can give the attempt with the full of fire. So one should not discard this opportunity of writing the Preliminary examination. Sometimes, many can clear the Preliminary exam but you cannot be done with the Mains examination. According to the revised pattern of Civil Service exams, there are two papers for the civil services prelims – general studies (GS) paper I and CSAT (Civil services Aptitude Test) paper II. They have multiple choice questions and carry negative marks. Both papers are out of 200 which make a total of 400 marks for the Civil Service exam prelims. If you mark an answer wrong, you lose one-third of the marks. Thus, if you get an answer right and mark three wrong answers, you earn zero marks. The topmost difference between the UPSC prelims and the mains examination is in the type of questions. The prelims is objective and the other is descriptive in nature. Read NCERT text books to get your basics right. Go through previous year test papers to understand the pattern.
There is a famous quote which goes as,
“If the thing is already been done by somebody. Then you can also do it.
If the thing is not been done by anybody. Then you have to do it.”

So, if anybody discourages you by saying that it cannot be done in the first attempt, then you have to do it. And believe me that IT CAN BE DONE IN FIRST ATTEMPT!