Thanks so much for the fave... and I couldn't help but notice your journal entry. I feel like that allll the time, except it's my job that gets in the way. Set aside one or two "sacred art hours" in your day, maybe once or twice a week, where you allow yourself to get some of those feelings out. Then, you can concentrate better on your deadlines, because you know your art time is coming up.
When the creativity bug bites and you get a super great idea while you're in the middle of something else, try to make a quick sketch or two, but don't let yourself spend more than 10-15 mins on it. The time limit can help you learn to get ideas down quickly.