Try to think one pure thought every day.

I am what I think. The mind is constantly occupied in the thought process, and it is virtually impossible to have a vacant (empty) yet alive mind. Without doubt, my entire world has been created by my thoughts. Sometimes the results of these thoughts are manifested immediately and sometimes results take a longer period to come into the practical. However, the fact remains that thoughts, when given constant energy and attention, will come into practical. They are the basis for all my actions.