One thing that helped me getting a better photographer (probably the most important one) was getting harsher to myself. Now, when looking over the photos I've published so far, I realized I still was just as harsh as I was when I decided to get harsher with myself sometimes in 2011. Which is - by far - not harsh enough. Now, I reviewed and deleted many photos. What is left? 12 shots. I shoot my NEX-5 since summer 2010, and now I'm left with 4 shots from 2012 and 8 shots from 2013. What does this tell me? Two things: How much better I actually got over the years and how bad I still am. There's not a single shot in my 500px library that I would call 'excellent'. They are 'good' at best - by my measure. By many other's measure, they might just be bad to mediocre. And that's great. I think nothing motivates you more to get a better photographer than actually seeing (and accepting) just how bad you are. Now, how harsh are you to yourself? How many shots do you publish - and of how many of your shots do you really think are great? Sometimes it may not be easy to say "I'm a bad photographer." - but at least for me, it was and still is the greatest way to motivate myself to improve on my work.