I have problems committing to a bitch called education

I have started back to school full time this semester. The first time since I was 18. I've never really worked hard in school, nor have I known how. Last time I took a full load I wasn't mature enough, nor did I care enough, to really try. Thus why I dropped out. Now at 23, with my own place, bill, rent, a job. I find myself feeling mature enough to apply myself, yet still the same old habits emerge. Procrastination sets in, even now instead of writing out an essay I find myself posting to my Blog. Something I tend to not do. I feel I'm ready to hunker down and do well for once in school. Yet at the same time I don't feel up to the challenge. As if for some reason I'm still not ready.