Freeman Pattersons book on Learning to See is great in teaching people to see things that aren't the Big picture. His concept of shooting a roll of film before getting out of bed in the morning teaches seeing shapes and light patterns and learning to see " common things in an uncommon manner".
( note, this does not mean shooting pictures of your dick)
Also what helps some people is just using a 35mm camera while doing this. Leave the large format thing at home.