Every one of us has at least one spirit guide who communicates to us through one or more of the psychic abilities The "job" of spirit guides is to help our soul stay on the path it chose this lifetime, and they communicate to our souls on a daily and nightly basis. Their foremost purpose is to guide and communicate with our soul, and that's why we aren't aware of them and why we can't readily see them.
Spirit guides are made up of energy and can appear to us in many ways, usually in a form similar to ours. We are receiving guidance from them all the time, whether we're aware of it or not. We get pictures in our heads, or thoughts come into our minds, and usually we think these are just our typical thoughts or pictures when they are actually guidance from the spirit realm. They also communicate to us through dreams, and through the sensing part of us, our clairsentience.
As we develop our psychic abilities, we are able to slowly make conscious contact with our spirit guide or guides, and over time we can actually see and hear them on a regular basis.
If you've been trying to make contact with your guides but aren't feeling like you're having much success, just remember that they are there and have been there all along. This kind of communication takes time, so be patient. Let your intuition guide you. Ask to contact your guides in your own unique way.
Ask for guidance from your guides as you would ask a friend for guidance. Don't make it a formal prayer, or a prayer of any kind. Guides don't like it when you pray to them they are friends to your soul, and they are not God, and not to be confused with your God.
If you want or need help with major issues in your life, go directly to the Source, and pray to your God. If you want daily guidance and companionship, talk to your guides and you'll never walk alone.