A Quote by Helena Petrovna Blavatsky
Never allow any unnecessary or vain thought to occupy your mind. This is more easily said than done. You cannot make your mind a blank all at once. So in the beginning try to prevent evil or idle thoughts by occupying your mind with the analysis of your own faults, or the contemplation of the Perfect Ones.
Source: Some Practical Suggestions for Daily Life
Contributed by: Theosophist