Why can I not make myself clean?

I am 23 I have a husband, a 1 year old. I work around 50 hours a week and I cannot keep my house clean!! I can't make myself even! Yes I am tired but that does not excuse me from letting it be this bad. I tell myself that I will but I just don't know where to begin and I feel so overwhelmed by the idea of even having to finish what I am starting that I just give up. Help me!! Any advice would be so helpful. (At this point I would even chug a case of energy drinks if I thought it would help. But then again, I have tried that and ....well....nothing......)