Two things I'd like to offer as perspectives.
1. How the mind is engaged in the processing of information can either help or hinder the process.
What I mean by this is that the process of "letting go" has less to do with fear, and more to do with the *conscious* mental level of thought processing. Simply put, one can not be *in* a state of consciousness AND subconscious simultaneously if the state of conscious awareness is dominating and hope to project astrally.
2. Overly analyzing the process hinders the experience.
What I mean by this is to stop "thinking" and start *experiencing*. Simply put, a baby does not speak "language" as it is most commonly understood until it has *unlearned* how to simply *experience* through means of communication. Communicating thought without linear language processes by simply allowing yourself to *experience* through as many senses as you can engage! Start with the five senses you've got and then *communicate through experiencing* in order to let go of the conscious *thought/language* processes; which actually keep you locked into being "body" conscious instead of *experiencing* the "astral" realm of consciousness.
Hopes this helps someone.