Guru Nanak Dev Ji teach us that there are four types of pain/suffering. The first is the pain of separation, specifically separation from Vaheguru. Guru Sahib says that we can avoid this pain of separation by doing Simran (remember Vaheguru), Seva (Selfless Service) and going into the Sangat (Congregation). The second is the pain of hunger, this can be hunger for food, wealth, desires or other things. We should try to become only hungry for Vaheguru. The third is the fear of death, this only comes to those who are separated from Vaheguru. If we do Simran, Seva, and go into the Sangat we can eradicate this fear of death. The last type is the pain of disease, when one’s body has an illness they go through extreme pain. The medicine which will cure all illnesses is Naam (God’s Name). One will notice that in order to alleviate all four types of pain we must do Seva, Simran and go into the Sangat.