Christianity has been designed by God so that His people will succeed!
It is God's express will that you succeed as a Christian. If you are to fail -- you must get out of His will!
However, it is not enough to want the will of God and our own personal success. God can only deliver us and bless us through the Truth, Jn. 8:32.
The Christian must know the content of basic Christianity.
The Christian must know how to put the Christian life into practice.
The Christian must consistently obey God in faith and love.
Accept God's promise concerning your own spiritual success. Do so in spite of your feelings, circumstances and the poverty of your spiritual experience. God did not save you to fail!