The following flowchart describes the life cycle of the typical blog:
Step 1: Start blog. Yay!!
Step 2: Write things. This is going to be so much fun!
Step 3: Run out of ideas/time/motivation/chips.
Step 4: Think about how long it's been since you posted.
Step 5: Do other stuff.
Step 6: Decide it's time to start writing again. Yay!
Step 7: Go to step 2.
I have been in step 5 for a long time, but I'm happy to say that I reached step 6 today. I also decided to not worry about hitting step 3 again; it's probably inevitable, but since the whole thing is a loop, I can just keep going around as many times as I need to.