Subdue Negative Thoughts.
Learn to subdue, to purify, to order all your thoughts. Fight against all negative thoughts and doubts. Let sublime divine thoughts come to you from every side.
Thoughts of depression, failure, weakness, darkness, doubts, fear, etc., are negative thoughts. Cultivate positive thoughts of strength, confidence, courage, cheerfulness. The negative thoughts will disappear.
Fill the mind with divine thoughts, by Japa, Prayer, Dhyana and study of holy books. Be indifferent to all negative and undivine thoughts. They will pass away. Do not struggle with them. Pray to God for strength. Read the lives of saints. Study the Bhagavata and the Ramayana.
All devotees have passed through similar ordeals. So, take heart.
~ Sri Swami Sivananda, Thought Power