Decisions....quitting my job this week

So, I'm only 4 months past losing my son.  As everyone here knows, losing a child is the single most life-altering event ever, ever, ever.  And, I know that conventional wisdom counsels against doing anything drastic in the first 12 months.  And, I know that my grief is really new and fresh and supposedly will feel less harsh and painful and angry over time.  But I just don't think I can stand the idea of continuing to work in a job that makes me crazy. I go to work every day and deal with people wrapped up in petty squabbles and short-sighted decision-making in a state agency that is supposed to help people, but is dysfunctional instead.  And I have no power to make it any better.
I disliked my job before I lost Jackson and was looking for a way out.  But, losing Jackson has given me much less patience for working for petty tyrants in a job that is supposed to help people, but actually does very little good.  Basically, losing Jackson has given me less patience for pretty much everything -- including wasting 9 hours a day in a job that just pays the bills.  I'm trying to recognize that I'm dealing with a lot of up and down crazy emotions and make sure I'm not making this decision rashly. 
I think that giving notice will give me some lightness that I need and don't now have.  I will still have to deal with the loss of my son every waking hour of the day (and many hours in the night when I toss and turn and can't sleep), but at least I won't be wasting my time using my education and decent employment skills on a job that doesn't really advance any public good.  I am fortunate that I can take off 6 months or a year and be able to pay the bills (due ironically to an inheritance from my mom dying way too early, also in a car accident like Jackson), so I've drafted my resignation memo and plan on giving it to my supervisor on Friday. 
What the future will then look like, i just don't know.  After telling my sister that I didn't need to see a therapist, I realized it was worth a try.  And she was right.  I was talking to my therapist about this decision, and talking about how I would explain it to friends and family, saying I would tell them I was taking 6 months off to figure out what happens next given losing Jackson.  She then asked why I needed to put a time limit on it.  And, that made me stop and think and really think.  And it made me realize that I don't need to put a time limit on it if we live frugally.  It's no one's business how long it may take me to figure things out, and I just don't need to have a plan, and I don't know how long this is going to take and that's ok.  But, I've always had a plan and my next 6 months figured out on the calendar -- where we go for vacation and when etc.  I now realize that this is no longer possible.  We've lost Jackson and I don't know yet how to live a life that doesn't have him in it.  I know very little except that I hate my job and I don't need to work a job I hate.  So I am going to quit and try to be comfortable not knowing what comes next.