Meditation. Meditate and see where it takes you.
Also, consider what's been going on in your life. I was always very intuitive, but as life started to get more hectic for me, I lost my ability for a while. It just didn't come to me as easily. But then things calmed down and I was less stressed, I meditated more, and then I got a bit better. I always said about myself that my abilities fluctuate and come in waves. I go through periods when I can easily tell the future (it comes as just plain knowledge, not like visions), then there are periods when I can heal like no other, but tomorrow is a complete mystery. Then sometimes I need to use my Tarot cards in order to do anything.