Essays / "Successful friends" - an essay paper and having troubling starting HELP [2]

My topic is:

Make a list of some of your friends from high school and college. Some of them you might describe as having been very successful since college. Write an essay in which you explain the reasons why those friends have been very successful.

I do not know where to start.

I need a 3 body parts and supporting details.

I have an idea of some of the people who went to school with me and their life turned out pretty good.

The question is where do i start?

Do i start with their names? or their profession? or what is the meaning of SUCCESSFUL LIFE to them? could you answer as soon as possible.