Watch Concentration. Sit in a chair and place a clock with a
second hand on the table. Follow the second hand with your eyes
as it goes around. Keep this up for five minutes, thinking of
nothing else but the second hand, This is a very good exercise
when you only have a few minutes to spare, if you are able to
keep every other thought in the stream of consciousness
subordinate to it. As there is little that is particularly
interesting about the second hand, it is hard to do this, but in
the extra effort of will power required to make it successful
lies its value. Always try to keep as still as possible during
these exercises.
In this way you can gain control over nerves and this quieting
effect is very good for them.