This is something I so often wanted to find the discipline for. Most of the time I even carry a camera with me. Will see if I find something noteworty today then
For me in the beginning I though: impossible
Then I started to go back, open the door, get one of my many canmeras and lenses and .... voilà: did it.
On some days my pictures suck. But I do not give up.
The rules are: you do not have to do it every day. BUT: IF you do it every day you will become a better photographer no matter where you start.
I guess I missed two days since the year started on 1/1/16 ... a little secret ... on lazy days I take the X100T ... on days I do not want to take a shot ;;;; I might take my phone.
discipline?
No. I just believe in the method: training, training, training ... and not being afraid of taking bad shots sometimes.