The iHomework app ($1) makes organization a cinch. Use it to keep track of assignments, readings, courses, teachers, and schedules. Even better: you can set alarms for your homework and be notified of upcoming deadlines.
Worry is an indicator that your attention might be needed in a situation, toward an issue, or to someone. But that's all that it is. An indicator, an alarm, a flag. See it for what it is, acknowledge it, and then set your mind and heart toward moving through it...
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A reminder that the office room also needs to function as a yoga/meditation space- it needs to be clutter-free and soothing to all five senses. See this http://www.elephantjournal.com/2014/04/9-cheap-free-ways-to-create-a-blissful-at-home-yoga-space-kate-connell/ for additional guidance