I'm Fine

[deadpoetsvariety]

(This is my first poem posted here, and is the first in a series of acrostics that I may or may not continue. Any thoughts are welcome, as I'm only 15 and still working on writing). 

I keep it hidden, boiling, festering I like the imagery here, makes it seem like you're embarrassed to reveal this ugly thing
Melting away my soul. I like the use of melting especially considering this boiling, festering thing but like therabbitisme  said I think you can be more pointed than "your soul" and you're not confined by rhyme at this point. What is it in you that you're specifically talking about when you reference your soul being melted away, off, or through? 
Finally, I succumb. I kind of think when you say you succumb here you are just giving up and saying "I'm fine." I could be reading it wrong but if you are I would use different wording because it sounds like you're giving up in general. If that is what you meant then point well received. 
It's been going on forever., and it will
Never will it go away. I also agree that the rhythm gets odd here, but I know you want to keep it as an acrostic so you can just move the words around like that. Unless that break in rhythm is important to you if you were to recite the poem. 

Everybody knows, but I'll still say it. I got what you meant by it. I just think personally if you leave the last line open with "say" it sort of forces the audience to infer and they hopefully would infer "I'm fine" based off the title and the fact that the acrostic is right in the front. Also, surprise rhymes are fun.

I really enjoyed your poem. I think it was clear that you are alluding to saying you're fine when you're not. I tried to read through the other critiques to agree or add on to what was already said. I hope you keep writing and improving it's something that I let slip away at your age.