Davening for Others

Davening for Others:

The Chazon Ish zt”l writes in a letter to a certain individual (Igros Chazon Ish, Chelek 1, 123): “You are lacking in feeling the pain of others. The solution for this is to daven for others, even if the prayers are not coming from the heart, and even if the one you are praying for is a coarse and degraded person.”