Sometimes people are more psychic as children, possibly because they are open to all possibilities. Life tends to dampen down those dreams ans intuitions. You might be able to reignite your abilities by recording your dreams and writing down those random thoughts. Keeping a journal is a good way to bring your 'clairs' to the forefront.
I haven't written an article about clairvoyance as there is a lot of information about it around. Claircognizance and clairsentience are not so widely discussed.