Sermons can be endless , preparation for interview is the established norm , if you go by popular perception . According to UPSC ,interview will test the general personality , if it is so then we believe that personality is not an isolated trait , it is sum total of many things your knowledge, analytical skills in the face of complex situations and developments , ability to comprehend intricate social developments and finally being impeccably unbiased in your perceptions and judgements .
Interview is a reflection of your inner self , short term preparations are meaningless and futile attempts to camouflage your real personality .
Preparation for interview should start the day you start your quest for IAS. Developing The right balance between knowledge and personality takes time .