I have started a blog as well, where I log my progress with training, among other things.
I think a blog is a great way to record and reflect on your progress - as you read back previous entries, you will see how far you have come and seeing yourself grow is very motivating.
Evidence shows that if you put your goals in writing, you are more likely to achieve them.
Why don't you invite your friends to subscribe to your blog, that way they can hold you accountable for training regularly?