Programming is more than just writing code. Programmers must also assess tradeoffs, choose among design alternatives, debug and test, improve performance, and maintain software written by themselves and others.
At the same time, they must be concerned with compatibility, robustness, and reliability, while meeting specifications.
It is important for a Software developer you must be willing to work outside of their comfort zone. Technologies are constantly changing, and as developers we must execute integration or updates that we have never done before.
By pushing yourself to try new things, you end up being exposed to more code and alternative ways of tackling issues.
This drive to constantly learn and do new things that makes the difference between a good developer and a great developer.
Don't be afraid to break stuff. Breaking things is an important part of learning process.
Don't try to be great. Being great involves luck and other circumstances beyond your control. The less you think about being great, the more likely it is to happen.