Poetry - A Force for Change?

I can’t stop wondering, how can poetry truly be a force for change in the world (which in essence is the purpose of art right)? I feel like poetry is mostly seen as a way of sharing your own feelings with others, which is quite a selfish, ego focused purpose… Is it possible to change that, and if so how??? How can one be a poet and really make an effort to touch people’s hearts without at the same time trying to promote themselves, or focusing their thoughts too much on the self?

I had an epiphany about this, it’s not really an answer, but maybe somewhere to start from???? I was really frustrated one day and figured okay I just need to put these negative emotions into words, and so I did, but as I was writing it, it was like my channel was cleared and I was able to see a way to take the negative and pull God into it, and I realized that maybe that in itself is a skill to cultivate… If poetry is often an outlet to vent frustrations and negative emotions, why not create a new pattern, where the negative emotions come out and then the solution does as well (like the Fire Tablet, how Baha’u’llah’s lower self is sharing all His struggles and pain and anguish, and then His Higher Self takes over and finds meaning in all of it). It seems like it could be an interesting skill to try to cultivate… While it could come out with wonderful and meaningful poetry that would move others' hearts I think even more, it is definitely a method for writing poetry that could be taught. Is it possible for Poetry to be a force for change?