Day 3 of 100 - Running Objectives

I am so, so very slow.  Even by run/walk standards, I am pokey.  My biggest challenge is maintaining the run/walk intervals - especially during the last half of the run.  It doesn't matter if it's 3.1 miles or 13.1 miles... I peter out to a straight walk about halfway in.

I recently learned the difference between goals and objectives from a wonderful and very smart businessman who happens to own the largest balloon manufacturing company in the world.  He told me that goals are something you work toward, but never achieve because there is no end.  (Weird, right?)  But no, because a goal is something like"better fitness" or "running faster" - things you can move TOWARD but at what point can you not go farther?  There is no measuring this kind of "goal".  But an objective has a measure and a timeline.  For example, I'd like to run (or even run/walk) an 11 minute mile by June 1st.  It's blah-blah-business-people-talk to be sure, but it does help me realize that my previous goals post had no objectives, just ideas on what I'd like to move toward.

So, objective: 11 minute mile
Timeline: by June 1st

This will be a significant speed increase and will require some serious work.  I have read all sorts of articles on how to run faster, so I have some idea of where to start.  My main challenge is that my training pace has always been my race pace.  I get no adrenalin bump on race day.  I race like a I train - no faster and sometimes slower!  Keep in mind that I have never really busted my ass trying up to this point in my running career.  This is something that I'd definitely like to change.  I'd love to have that "left it all on the course" feeling at the end of a race instead of the nagging regret that I could have given more.

Today I did run/walk for 1 hour at a 14:05 pace to give you my starting point.

Any tips for running faster for a chubby pokey little puppy like me?  Is an 11 minute mile too ambitious for a 4 month time frame?