Thanks for all the suggestions with respect to the Suggest a Topic post. This has given me greater clarity in understanding which topics people want to see covered next. I’m always open to suggestions, so please keep them coming if you have more.
Right now the leading suggestions were for topics 1 and 7. These were:
1. I have no idea what I should be doing with my life. How do I figure this out? How do I know which goals to set?
7. I’d like to hear your comments on increasing your energy. I often find myself mentally drained and was wondering what advice you have for feeling revved up and focused all day long.
These are both very complex questions where a single post would have a hard time doing it justice, so I’d have to do a series on them as I did with the topic of self-discipline.
My views on both of these topics are non-mainstream, but that’s pretty much a given because you don’t achieve high levels of energy and fulfillment by aiming for average.
I’ll start with #1, especially since a lot of other questions relate to it. It basically requires that we tackle the question, “What is the meaning of life?” I’m up for a challenge. 
I think I’ll need to approach this from the perspective of my personal journey through this question, thereby answering the question, “What is the meaning of MY life?” and explaining how I came upon my current answer to that question. This will require that I address topic #10 (my religious/spiritual beliefs) along the way.
I’ll kick this off within the next few days.