There are a lot of great quotes about grinding away at difficult goals and dreams until you finally break through. My favorite quote is the one the San Antonio Spurs have adopted.
When nothing seems to help, I go and look at a stonecutter hammering away at his rock perhaps a hundred times without as much as a crack showing in it. Yet at the hundred and first blow it will split in two, and I know it was not that blow that did it, but all that had gone before. -Jacob Riis
I've seen this quote come to fruition personally. When I first started yoga I went to class and felt uncoordinated and foolish. My thoughts at the time: I can't do all these moves, my body isn't built for this and I'm not sure this is for me. I'm not one to quit so I gave it six months. Progress was slow and fickle, you would move forward a little and then back. I kept at it.
One year into the practice things clicked. My body adjusted and my mind adapted. Poses and techniques I couldn't dream of doing a year before were being pulled off and I was growing into my practice. The stone had cracked.
With photography it's the same. Out of 100 shots I find 1-2 that I like. My inner critique still exists: more photos can be direct, I dawdle on weird things (feet, street poles and bricks) and I fall back on similar patterns. I'm always working through these and other feelings that the images aren't good enough and where is this path taking me.
I don't let it stop me though. I remember that I enjoy it and right now I'm hammering away at the stone. My rolls of film landing on the object with a hard thud but no signs of a crack. Eventually I'll wear it down, eventually I'll break it open and rejoice. Right now I have to be ok with the process, the hammering and knowing it'll work out.