What's difference between "after" and "behind"? Thanks. What's difference between "after" and "behind"? Thanks.

a brief introduction for interview use bellow is a brief introduction for interview use, so it is supposed to be spoken aloud, just please don't treat it as an essay. Thanks for the corrections or comments! Supplements are welcomed as well. My name is blah, I am a second-year student obtaining LLM from blah, major in blah. 1. I have great willingness and ability of learning. I learn quickly, smartly, especially when it comes to learn from practice, I believe I can absorb much more nutrition from practice than book. 2. A clear thought can also be found on me when I am working. Once the goal is blocked, I adjust, continuously. I am self-motivated, I tend to finish my job by making the most use of handy resources, but with fewest questions. 3. I’d like to take challenges, the feeling of success in something big makes me satisfied. In the mean time, I am a steady, diligent team worker. I can work efficiently and effectively under deadlines and handle the work pressure well.