I see a lot of comments for people looking to upgrade their cameras and when asked why they reply I can't get good photos and I think a [Insert new body] will help me take better photos.
A brand new camera is not going to make you a better photographer. A lens with a four figure price tag is not going to make you a better photographer. Top of the line studio strobes are not going to make you a better photographer.
These are just tools. Can they help get better photos? Of course, but if you don't know the capabilities or how to use them it wont matter.
Going out and shooting, pushing the limits, trying new ideas, failing miserably, figuring out what you did wrong, going out and trying again. Reading the owners manual and learning your camera inside and out, what ALL the functions are and what they do. Figuring out how changing one setting will affect other settings and how it will affect the over all photo. Taking chances and accepting both success and failure but learning from those failures and how to fix them so you don't fail the next time. This is what will make you a better photographer and in turn take better photos.
If you're considering buying a new camera stop and ask yourself have I constantly pushed this camera past its limits? Do I even know what the absolute limits of my camera are? If the answer to either one is no then go out and keep shooting and be happy with the camera that you have.
Photo for attention
D80 w/ 17-35 f2.8 @ 1/200, f/4, ISO 400