The speaker feels empty and overlooked, describing themselves as "nothing," "cold," "useless," and "invisible." They float above watered surfaces, which suggests drifting along without really being part of anything, and the "tiny specks" beneath them may hint at small, unnoticed things piling up underneath. The picture is of someone detached from their own life.
The second half turns to the cause. The speaker pours "all my wasted energy" into people and projects they hate, while the ones they love are cut off. The title, "Just business," sounds like the excuse people give for cold choices, and the poem seems to show the cost of that attitude. Judging by the wording, the speaker has chosen practicality over passion, and feels hollow because of it.
The mood is flat, bitter, and quietly regretful. Short lines and clipped words make the speaker sound worn down. The colons add a sense of forced listing, as if they are ticking off obligations. The ending lands with a sting: what they cut off was exactly what mattered.