Here's some quick blogging tips I shared with a colleague, that they found helpful:

1. Have a purpose or a theme -- I find having a simple purpose helps.  For example, my one-liner for me is to journal my Microsoft adventures.  Within that, I'll tend to focus on shaping software, project management, and effectiveness.
2. Know what you want from blogging -- if you don't have a compelling why, you'll lose the path.  Your's might be *share insights and lessons learned*, or *build a sounding board* or *influence change one reader at a time* ... etc.  It's whatever is compelling for you, and remind yourself when you need a boost.  For me, it's personal growth and sharing what I learn with others.
3. Schedule your blog time -- it's not tough to write stuff; it's tough to sit down to write it.  Make the time first, and the creativity will happen.
4. Post "good enough" vs. fit and finish -- if you always aim for the long-shot, you'll miss great posting opportunities along the way.
5. Do a blogging 30 day improvement sprint -- Seriously.  You'll learn a lot up front, that you can use over a life time.  While a piecemeal approach over time works too, I think this is a case where you can learn a lot in batch. There's a lot to be said for little improvements for 30 days.  Even if that means asking and finding one good blogging question per day.  Most importantly use this sprint to find your rhythm.  Start off more frequently to become more efficient, then choose whether you want to do daily or weekly.