Are you one of these or do you know one of these?

Ever meet someone who puts everyone else before themselves. I have met other people like this. They seem to have boundless energy and time to give both inside and outside the home. As a matter of fact I have one of them living in my house right now. It is my nephew Brady. He is only 12 years old. He will do anything a person asks of him. He is helpful, quiet, considerate, observant, and many other things that I find amazing. I was the same way when I was growing up. I have the desire to still live this way but not the energy or time that it takes. Are people like this built differently than others? Does the world need us, want us, use and take advantage of us? These and many more questions have occurred to me. After many years of self analyzing I know why I am like this. But how do others become this? A few weeks ago we had a pretty interesting Bible Study having to do with things like empathy, sympathy, compassion, brotherly love, kindness etc. The general consensus in the room was that it is hard to be these things. I felt alone, because my nature is the opposite to a fault it is very hard for me not to be like this. I have been like this to so many for so long that I burned myself out. However it is still my nature and even when I am tired and I know better I over extend myself to take care of others. And I know from history that many people take advantage, I still keep going. Why? I don't know, but I hope I continue to learn and am able to use these positive behaviors with wisdom.