The best way to improve your intuitive and psychic abilities is to begin meditation. I know it sounds odd, but when you learn to quiet your mind and stop all the chatter, you train your mind. Sit quietly for about 20 minutes a day, and do your best to clear your mind. Stay with it. In a few weeks, unimportant thoughts won't distract you as much, and that's when your mind is clear enough to start seeing visions and colors. Work your way up to twice a day. Eventually, you may see other lives or scenes that have meaning for you.
There are many types of meditation, so you can research that and decide what you like. Beginners sometimes like to listen to guided meditations, where someone else talks and leads you through. There is an app for your cell phone called Buddhify which has short, guided meditations. I am writing an article about how to develop intuition and clairvoyance, so hope to be able to post that soon.