In general, with adjectives that have both -ing and -ed forms, use the -ed form to describe how you feel and the -ing form to describe the thing/person/event that causes the feeling:
I'm interested in art. I think art is interesting.
I'm interesting in art.
I'm bored. This movie is boring.
Here are other pairs of adjectives that follow this pattern:
I'm tired. My job is very tiring.
I'm excited! This soccer game is really exciting!
I'm frustrated. The problems in my life are so frustrating.
I'm surprised. This situation is quite surprising.
I'm confused. The book I'm reading is confusing.
When talking about people, the -ed form describes a temporary state of feeling, but the -ing form describes a more permanent characteristic of someone's personality:
He's bored. = He feels bored right now.
He's boring. = He is a boring person in general. Other people feel bored when they are with him.