You must flow into it and surrender to it calmly. Some things which are found to be helpfull in meditation follow. Try concentrating on the flame of a candle when focusing. You could also use a crystal ball. The later is rather exspensive but small crystal window ornaments or pyramids also work well and cost much less.
Music is also an aid to some.
The music should be quiet and rhythmic. It should bring on feelings of peace and comfort. Such music may range from New Age recordings to classical. Another usefull device is to focus on a symbol which holds special meaning for you. It may be an well known symbol or one you design yourself.