TRUST YOURSELF. This is still the greatest way to develop your psychic ability and any other talents that you have. You develop anything that interests you by working with it, practicing a lot, and becoming aware of everything that is written, everything that is working, and aware of the people in the field who are making a huge achievement.
For your own psychic awareness start to become aware of how your receive messages.
What does it feel like? How does it come in? Is there a specific part of your being that is receiving the information? How do you make an assessment that this is a message? How do you know? What do you feel? Trust this process. As you become more aware of your own space, ability, and the psychic energy, set up little experiments for yourself. For an example: Put out a casual thought for someone to call you. Record how many times that happens. Become aware of your dreams, and watch if any of these come true and how often.
Listen silently, and see if you can pick up the thoughts of someone who is physically near you. Start with someone you know well, like a friend or relative. See if you can hear the words, or get an impression of the thought picture that they are holding in their mind. Do not be afraid of this. You are practicing and developing as you would with any musical instrument, any new tool, or any skill. A part of you is a casual and objective observer. You are just becoming aware of what is there. You become aware of how you receive, and how you can transmit, and then you become aware of pictures, sounds, or words coming spontaneously in.
Some techniques of practice according to the Spiritcommunity.com website- Try pausing before you do something. For example, when the phone rings pause a few seconds before answering, can you tell who it is? Try it when someone knocks at your front door. Try it at work, can you tell when someone is happy, sad or pre-occupied with other things on their mind? Try to become universally aware, let your mind and body become an antenna to psychic information that flows through and about you. Touch objects that belong to someone that you know and try to see if you sense any impressions of that person. Work with a known psychic who is very adept at the psychic practice and who can teach you well. You need to feel very comfortable and trust this person.
One of the ways to develop and hone your talent is to work with the energy. Keep allowing yourself to receive messages. If you don't understand the messages keep ask probing questions until what you are receiving comes in more clearly. This is very effective when you are working in healing such as Reiki. When the information is correct, try to determine how it was correct, how that felt before and during the impressions. Was it a strong feeling? Was it more subtle? What part of your body did the information come through? Remember how it felt so that you can have greater understanding in the future when messages come through. Also if it felt off, or there was any tension. Why does it feel that way? What adjustment needs to be made, or is this a warning of something for you or the person?
When you are walking in the street or you get an impression about changing directions, or a thought of caution about something small, like locking your keys in the car. Pay attention to these little promptings. If you are open to this, you get prompting very frequently throughout the day. These are all little flashes of your psychic ability. The more that you tune in, the more clearer your impressions and flashes will become.