I would have:
…never assumed no one would ever read it.
…changed more names.
…included more photos.
…published more posts.
…thought more about what the consequences of my boss, Mom, other half, buddies, old girlfriends, long lost high school friends, co-workers and past teachers reading it would be.
…asked myself “How will this post read, and will it matter, five years from now?” before I hit that Publish button every time.
…remembered that “just because you can doesn’t mean you should” more often.
…stuck to topics of wide interest on my “public face” blog and kept the personal life stuff for a private LiveJournal. With a handle.
…more actively developed my writing skills. (Writing well is writing well, blog or not.)
…taken things less personally.
…grown a thicker skin faster.
…focused more on posting things that got me jazzed up, rather than worrying about lack of updates.
…never, ever published a post that started with “Sorry I haven’t posted more…”