Civil Engineer

Hi,
The answer cannot be a specific one.
Civil Engineering is not a single profession. A person who graduates as a Civil engineer has the ability to work in an incredibly large range of professions, such as, Traffic Design, Structural Engineering, Geotechnical Engineering, Bridge Engineering, Pre-cast Fabrication and Design, Civil Planning, Water & Waste Water Engineering, Industrial Engineering, and many more.
But to generalize how to become good in any of these, you need to know that no 2 projects are the same. You will always face new challenges, strange problems, and will have to come up with new solutions. To become good, you need to make sure to think out of the box, but in contrast, also never be afraid to ask and inquire from those who are more experienced and get fresh opinions from those who are less experienced.
Want to go beyond 'good' and aspire to be a great engineer? then use your first 5 years of work in the different departments of your field. Spend a couple of years in construction, a couple working in design, and top it off with working in site management. With the large scope of knowledge, and the overview of how the workflow goes from an idea to proposal to design to implementation and the management involved, you will:
Find your calling of where you belong in this workflow.
Have an edge that allows you to go beyond the narrow scope of a single position, and apply solutions to the bigger picture.
Hope this helps and best of luck with your career!