What is the trick to letting it out? For me, hard work is the answer. There is always an aspect of craft to every form of art. Pianists need to exercise their fingers regularly; painters, their hands and arms; dancers, their entire bodies. Writers must write, painters must paint, and photographers need to make photographs. Listening to music, watching videos of dancers, reading other people's books all day is going to give you information but will add little to your craft. You see, the moment your fingers hit the keys or the shutter, you have committed yourself to creating art. And that's where the journey begins - day after day.
Over the past 28 years I've been a teacher in some capacity. I have never liked George Bernard Shaw's saying, "Those who can, do; those who can't, teach," because it sometimes hits home too closely. However, during my teaching, I always did the same assignments the students did. I wrote the short stories, took the pictures, acted the scenes - whatever it was - because I like doing, too.
Teachers are indeed important, but we are all students of the world, so let's keep on doing!