People skills - May 21st

Today I had lunch with a good friend who has been a very successful business person. Years ago he began as an entrepreneur by growing a successful computer business. He eventually sold the business for a healthy profit and has gone on to be involved in several other entrepreneurial efforts. 

Today I asked about my friend's education background. He studied business administration and accounting. However, he explained that the most important skill he developed was how to interact with people. 

The ability to develop, grow, and maintain good relationships is more important than any degree you can get from a school. 

Lesson learned: Relationships are vital. I need to continually work at developing, growing, and maintaining good relationships with everyone I meet. 

Question: how have you worked to develop good relationships?