Coming to Terms with "Good Enough"

OK, here's my one philosophical post for the week and then I'll go back to complaining about rabbits and such.

So I'm taking this summer class.  It's online and I knew I was going to miss two weeks of it due to the upcoming (hallelujah) Croatia trip.  About a month before the class started, like the good little grad student that I am, I emailed the prof and explained that I would be out of the country for two weeks of the class.  I asked if that was a deal breaker.  I asked if that would put me too far behind for a good grade, or if the professor simply didn't want students missing that much of the class.  I was assured that it was do-able.

Today I emailed the prof and reminded her that my vacation is coming up, and asked about re-arranging a couple of deadlines.  Long story short, it's OK, but she never realized that when I'm out of the country, I won't have email access and therefore won't be contributing to our on-going electronic discussions, and informed me that she can't be flexible on this part and it may affect my grade.  She did note that as long as my work is consistent and well-done, I should be "fine" in the class.

Fine?  Fine means a lot of things to me, and none of them are on the desirable end of the "good" spectrum.  Um...what does that mean?

I had a moment.  This has happened before and will continually happen until the Good Lord calls me home.  It is entirely possible that I will get a B in this class and it will be because of the two weeks I'm on vacation and not because of any lack of understanding or effort on my part.

And I freaked out.  Should I drop the class?  But I've already bought the books and all the materials and I've read countless articles and contributed a lot already.  Not to mention, I'm learning effective ways to teach composition.  I'm actually enjoying this (academically speaking).

I want to do this.

Even if I get a B.

Even if I deserve an A and still get a B.

So, I'm going to do this.

I am under construction.

I went for a long run (to metabolize the adrenaline in my system and help me cope with stress and anxiety) and I thought.  What do I want the grand narrative of my life to be?  I want it to be travel and reading and God and love and G and bunnies and good friends and wine and tequila! and food and academic challenges and helping others learn and just helping others, period. 

If I want my life to be a balance of all those things, and if I'm not one of those people on a definite career path, then I'm going to have to come to terms with "good enough." 

Is a B good enough?  Yes.  If it means that I can go to Croatia and not stress about grad school.  School?  What's that?  Oh, look at that Roman Colosseum!

To be clear, I don't consider myself a perfectionist, but these are the types of daily stressors that really get under my skin.  (Voice screaming in my head:  You did not give up a career just to get BEEEEZ in GRAD SCHOOOOOOL.)  Hence the running.  That voice can't scream when it can't breathe.

Thoughts on your version of "good enough"?  Do you ever struggle with this?