Learn it well in your head, know it well, pick things you know and bring the old you and all the experience you have from singing these various kinds of feelings that are still related to what I have done in the rest of my career.
Success or failure depends more upon attitude than upon capacity successful men act as though they have accomplished or are enjoying something. Soon it becomes a reality. Act, look, feel successful, conduct yourself accordingly, and you will be amazed at the positive results.