I can haz energy and the motivation to work upon creative works?

The only thing of substance which I have managed to do this evening was the creation of a dinner (chicken, spinach, onion and whole-wheat pasta + Szechuan spices). I have put my effort toward my writing, yet I have only gotten scraps accomplished thus far. I have been too tired, both mentally and physically, to get much done in the evenings after work which frustrates me. I have goals yet my exhaustion prevents me from accomplishing them in any sensible time. I have been crashing at 9am or so in the evening which is far from useful.

I would feel less irked about this development if my work was actually intellectually stimulating. My work is boring and the commute is long, but that's about it. I just feel like I am spinning my wheels in both my writing and my work, though life is progressing apace. Perhaps some later use of a couple vacation days will help me.