how to be an exellent piping engineer ?

You wrote:
"I need to know how to be an excellent piping engineer"
This is not very specific and it would be hard for anyone to help you at this point.

What kind of piping engineer do you want to be?
There is:

- Pipeline Piping Engineering
- Process Plant Piping Engineering
- Fossil Fuel Power Plant Piping Engineering
- Pharmaceutical/Biotechnology Piping Engineering

With-in these broad groups there are areas of specialties;
- Piping Material Engineering
- Piping Design Engineering
- Pipe Stress Engineering
- Piping Field Engineering
- Piping Fabrication Engineering Management

You might think that you want to be all of these. Well you need to remember that a baby starts very small and in a very helpless state. After a period of time it learns to crawl. Then later it learns to walk and only falls down a few times each day. As time goes by the child advances to running a little. Much later as a grown-up he or she might enter their first marathon. This individual does not always win that first marathon and may never win one but just maybe will have to settle for just being a very good runner.

I wish you very good luck in you career.
As a start you might want to read everything you find on this web-site. That includes all the articles in "Training", "Tips", "Tools", "Standards", "Forum".
After that please ask some specific questions about what you want to know.