I must be crazy!

I have enrolled in a graduate program to earn a master's of education in counseling.  I must be crazy.  It was a little easier 20 years ago...or was it?  I THOUGHT it was...which is really crazy.  I became a single mother with 4 sons under the age of 6, halfway through my undergraduate degree. Not sure that qualifies as easy.  Now, my sons are grown, out on their own and I'm back in school.  It's harder than I remember.  Is that because I'm older and learning is more labor intensive? OR am I just not remembering the past clearly?  I keep telling myself that it will pay off in the long run, but I'm not sure how at this moment.  The future is so ........  well,...... unpredictable.
45 minutes each way, twice a week, to go to night classes after spending 8 hours and most of my energy teaching middle school.  It WILL be worth it!  At least that's what I keep telling myself.  :-)