I’ve learned how to dream.
I understand how to speak.
I know how to deal.
But I don’t know what to feel.
I’ve learned how to think.
But I’ve forgotten how to breathe.
I don’t know if I can see.
I don’t know what to believe.
There is a difference between thinking and knowing.
There is a difference between staying and going.
Unfortunately their’s also a difference between a colleague and a friend.
Between family and friends.
Note the spelling differences between ‘there’ and ‘their’. You have used the pronoun ‘their’ in error.
Note the spelling of ‘unfortunately’.
The structure of the poem is okay — but then it would be difficult to imagine anything else unless you were trying to copy a specific form of poetry. Poetry can be whatever the poet wishes to make it.
Ugh, yeah I keep making that same mistake and I realize it when I read it again lol. Thank for telling me that. I have a cousin that when I showed her one of my poems she said my structure was wrong, and I thought, “Really?’”. So thank you for telling me that. My spirits are up again 
Beeesneees,
Are all these sentences OK?
“I don’t know what to believe and what not to believe.”
“I don’t know what to believe and what not to believe about the story.”
“I don’t know what to believe and what not to believe about what he is saying.”
yes