The souls is the center or the guiding force in your earthly existence. Some may call it the energy body or the core personality or whatever, but the souls is the chief connection between the spiritual and physical aspects of your life. Therefore, it is influenced by what occurs physically, mentally, and spiritually.
The point is, that different occurrences in the physical and mental attitudes or situations in your life can produce different focuses for an astral travel experience. You may contact and have the same goal, such as meeting with your Higher Self, but because of the life experiences on the physical plane, the insights obtained are designed to help in whatever situation you are currently experiencing.
So, if you want to gain the broadest spectrum of help and insight, you should experience travel to the astral plane during the full spectrum of personal feelings and situations.