By keeping a “photographic diary”– you can capture interesting moments of your everyday life through people on the streets. If you are feeling in a sad and depressive mood, you are probably more likely to spot that in the streets. So by photographing how you feel, you can create authentic and personal images.
Another takeaway point we can learn from Klein is the importance of the amateur approach. Being called an “amateur” is often a negative label. However the word “amateur” originated from the idea that someone did something for the love of it, rather than for the money, fame, or prestige.
So regardless of how much photographic training you have, just go out there and shoot. Don’t worry so much about the theory of photography, just shoot because you love it.