Sri Chinmoy: If one commits suicide, then one is doing something extremely wrong. One commits suicide because of some emotional problems or some weakness in his life. But we are God's children and we have to fight against weakness and ignorance. God has given us this body, vital mind, heart and soul in order to realise Him and manifest Him on earth. But if we destroy the body, then how can the vital, mind, heart and soul act for God? The body is a house. Without a house, how can we live? If we destroy the body, then we cannot live on earth. So God does not want us to destroy the body. He wants us to face the world. If we fight against temptation, ignorance, weakness, emotional problems, then only we can realise God and please God.
According to strict Indian philosophy, the act of suicide is the worst possible inner crime. Once the body is consciously destroyed, it takes hundreds and hundreds of years for the soul to reincarnate. If it is a natural death, then the soul gets the opportunity to come down again and reveal God's Light in the normal way. But if it is an abnormal death, it becomes extremely difficult for the soul to come back on schedule. It is not only difficult, but almost impossible, unless God out of His infinite Compassion or some very great spiritual Master helps the particular soul.