There are three ways of combating it (melancholy). One is to take interest and busy yourself in something else not yourself and to think of your condition as little as possible. Another is to separate yourself from this vital restlessness and melancholia as much as possible and face it, as you were doing, with an energetic and resolute refusal to accept it. The third is to habituate yourself to turn your mind upwards in a call for the Mother’s peace. It is there above you waiting to come down if you make yourself open to it; if it came down, it would rid you permanently of all this suffering and trouble.
Ref: Letters on Yoga – IV