Hi crch,
Diary element -- First, there are 35 uses of "I", "me", "I'm", "my" etc. in these 25 lines of poetry.  You can note the uptick in the second half of the poem when these words become scarce.  Second, there is the sense the writer is simply chronicling feelings for his own purposes.

Picture, puzzle, pattern -- good thoughts.  Puzzle not so much, though some poems can't escape it.  Pattern - yes in the cadence, meter, and sounds, and sometimes the structure.  But exact phrase/word repeats carry a need for serious caution. 

I get that it's an addiction poem.  There are huge issues & emotions which are not making it into the poem.  And I think the repeat of emotions being tricky conveys (to me) a light-hearted or almost cavalier treatment, suggesting that if the Narrator is not taking this seriously, then why should the reader?  I also think writing things off to tricky emotions is a head-fake away from the heart of the addition experience. 

Yes, there are serious subjective elements to poetic creation and appreciation. 

How to keep the vibe?  You know where the thread is, if you don't then there is really no poem.  If you are not sure, then feel around in the poem and see if you can find the thread.  If it is one place in the poem, but not another, then start where it is and follow it each way.  To me, it looks like your thread appears in the second stanza (S.2) and drifts into S.5, but then fades again.  That's just my guess -- you are the only one who can know.

A place to start -- remove the repeats and see what you have -- there is some good material, and some stuff appearing weaker by comparison. 

Just my thoughts.  ignore if they don't seem helpful.

I appreciate your opinion very much.  Only recently, have I tried to pen anything.

"Pandemic Poetry" presents...

Would you mind expounding on "diary element"?  This may be applicable to all my poems!

Also, when I write, I see my poems as a picture, puzzle or pattern.

That was my intention with "Just an Emotion".  Dr. Seuss taking on a "heavy" - drug addiction.

I realize poetry is subjective.  It is mine, but your reviews are interesting to me.

Do you have advice on how to keep the vibe of this poem, without feeling overdone?

Wow -- you have the facility for writing.  This poem to attribute to your character should fill the bill. Once you finish your novel, then get to writing poetry on a daily basis -- you will be delighted at what results.

English being your second language presents its own set of hurdles in writing poetry, but this effort demonstrates that you are up to the challenges.  Question -- do you write in your first language and then translate?

When you describe in prose what prompted this writing, you evoke the senses and the emotions -- that is quality writing.  Your poem is way too general/abstract to let us share what you feel.