I just do a lot of flexing in the mirror... No, not really.
My method is incredibly simple and unsophisticated, but it seems to be working so I've stuck with it.
As I said in another post ( healthunlocked.com/weight-t... ) I am essentially doing an ABA BAB pattern. So, as simple as it sounds I have four different notes in the notes application of my iPhone labeled Workout 1, Workout 2, Workout 3, and Workout 4. Each note has the exercise listed and how much I lifted last time.
I've tried to use apps that are specifically designed for tracking lifting progress, but I just haven't found anything as simple as this.
I think the reason that this has worked when other methods have failed is that I always have my phone with me anyway so I'm unlikely to accidentally forget it at home or at the office.
Anyway, I'm interested in knowing what others do and what you've tried!