Passion or Discipline?

I have been in a blogging slump. I have been mentally rehearsing, but have found no topic I think worthy of the time it would take me to compose it and for my dedicated thoughtful colleagues to respond to it. I have spent more time analyzing my thoughts about why blogging is hard for me than actually blogging.

I reread my last post, and I realized it was a topic I was absolutely passionate about. Nothing I have thought of recently matches that intensity, and I find without a deep connection, writing seems a waste of time to me. Sending it out to the cyber-universe seems ludicrous. WHO would want to read such drivel?

But then, the reason we are asked to blog is to develop the discipline of critical thinking, reading and writing skills. As with physical exercise, this mental exercise should be regular, if routine. I should be able to take any topic at any time and dissect it, analyze it, argue for or against it, and then take the idea further in some way.

So, is this about passion, or discipline? Perhaps my problem is wanting both.