If you believe something exists beyond this physical world, then you may also believe that something or someone is seeking to convey a message to you. This is not necessarily a dream. Which messages are you reading? What do you want to hear? from whom? Why?
Each being is limited in ways it communicates. This is based on energy vibration and the state of a soul's evolution. You know yourself, in the physical world, that it can seem easier to commuicate with some people than others, even if part of you knows what it wants to say. Part of you holds back or, you may not find the right words to convey your message clearly so that the recipient understands. Your thought associations may not jive with the person you're speaking with. On unseen levels, your energy is not aligned.
Spirit encounter a similar situation when they desire to share words and ideas with the mind of a human being. Not every person is receptive to such messages. Not everyone wants to hear. If you do not choose to harmonize thoughts, then you will not receive.
Those who contemplate what is possible may not grasp what is necessary to evolve the soul. Express love unconditionally and you protect yourself from undesirable entities. Compassion only attracts compassion. If you love someone and they love you back, then you are connected beyond the physical. You can open doorways through the dense energy of the physical to spirit worlds beyond. Spirit teach those who want contact.
Spirit work in different ways, but often connect through aligning with the energy of a person's aura. Some people learn to raise energy vibration enough to connect with spirit that learn to slow their vibration down. Where the will exists, your understanding grows. Thus, you journey to open the eye of soul or, expand your degree of perception.
One remarkable thing is how spirit can work though a person to help someone else, to provide reassurance or some other message. At the same time, spirit convey messages to the medium about his or her physical life. Some are selectively hearing and listening.
It is no coincidence spirit approach certain mediums, for mediums are always learning themselves. Their lessons emerge as they attune to subtle nuances 'between the lines.' You can withdraw and detach for extended periods in isolation to develop yourself or, learn what it means to live on the physical plane without being consumed or affected.