I'm not in college yet, so I probably don't have the amount of work you do, but I am definitely a procrastinator! I'll leave my least favorite stuff to do last, and when I get there, I'll take a "short break" (yeah right!) and end up not getting everything done! So I can relate!
But, all that said, I do think you should at least write a little bit, especially if you want to write for a living eventually. Just like an athlete would take time out of his day to practice whatever sport, you should take time to write! (Though, to me, it seems like you do spend time writing - you write essences and do some worldbuilding on here! Just saying.

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