The typical atheist rebels against God as a teenager rebels against his parents. When his own desires or standards are not fulfilled in the way that he sees fit, he, in revolt, storms out of the house in denial of the Word of God and in scrutiny of a great deal of those who stand by the Word of God. The epithet 'Heavenly Father' is a grand reflection, a relation to that of human nature.
If Christ has been given us, if we are called to his discipleship we are given all things, literally _all_ things. He will see to it that they are added unto us. If we follow Jesus and look only to His righteousness, we are in his hands and under the protection of Him and His Father. And if we are in communion with the Father, nought can harm us. God will help us in the hour of need, and He knows our needs.
True prayer is done in secret, but this does not rule out the fellowship of prayer altogether, however clearly we may be aware of its dangers. In the last resort it is immaterial whether we pray in the open street or in the secrecy of our chambers, whether briefly or lenghtily, in the Litany of the Church, or with the sigh of one who knows not what he should pray for. True prayer does not depend either on the individual or the whole body of the faithful, but solely upon the knowledge that our Heavenly Father knows our needs.
There is nothing that we are enduring that Jesus does not understand, and He waits for us to go to our Heavenly Father in prayer. If we will be obedient and if we are diligent, our prayers will be answered, our problems will diminish, our fears will dissipate, light will come upon us, the darkness of despair will be dispersed, and we will be close to the Lord.