Breathing technique: count 7 times while INHALING a long deep breath, HOLD your breath and count 4 times, EXHALE and count 7. Practice this 5-7 times a day.
Train your brain to be quiet: Meditation has multiple benefits on your mind and body. Meditating for just 10 minutes a day. Most importantly, it helps eliminate the random negative thoughts that occupy your mind and contribute to stress and anxiety.
Get proper rest: Take proper sleep (7-8 hours). Chronic sleep deprivation can really strain your nerves and reduce your cognitive abilities, reduce your IQ and also your concentration power.
Think of the big picture: take some time to ask yourself the right questions, get to the root of your problem and take smart decisions.
Be organized and self-disciplined in life to become an IAS officer. Arrange your study materials for IAS separately. Keep your current affairs notes, short notes, NCERT books, Previous year question paper in an organized manner. Keep a separate folder for each and every subject. This will help you find the right material at the time of revision.