Why does organization seem so difficult?

OK, So blogging...about Organization...hmmmm. I started this blog to get other peoples ideas on organization. What works for you? What doesn't work for you? Let me explain a bit about why I decided to start blogging about it. I have always been a bit of a clutter bug but I have always been able to keep thins mostly organized. Since my son was born in October I am finding it harder and harder to keep things organized. I did ok the first 4 months and then I went back to work and am currently trying to finish my Bachelors degree in Early Childhood Education. Ever since I went back to work it seems so hard to keep things neat...why? He doesn't make a mess...not really anyway..so why is it that my DH and I can't seem to keep it together?! 

I need ideas...I need help. How do you stay organized with a baby at home while working full time and doing schoolwork? (I should also mention my work is not full time, 8am-3pm) but I live 30 minutes from work and they have supplied me with no curriculum or papers for the children I teach, I am to come up with everything on my own so this is always on my mind.