My Inability to Focus

Why is concentrating so difficult?

Sit down, get out folder, pick up pen, lay paper out on desk...read notes...re-read notes...think about what other work needs doing...make to-do list...make to-do list for non-work tasks...begin to do one of the tasks on the second list...look at notes again...answer one question, leaving ends of sentences unfinished for 'later'...turn on computer...check emails...say hi on msn...look at folder and answer another question, again unfinished...decide 'i can't do this properly until a) i talk to someone in my class who knows, b) i speak to my tutor or c) i get another book out of the library'...get out sketchbook...read through all previous work, for no reason, just like reading it...feel hungry, get food...look at work...panic a bit...decide need sleep, go to bed.

please analyse me someone! why do i do this? why can't i just resolve to do my work and actually do it, without finding distractions or making excuses?