Why do I feel resentful at work all the time?

You carry a quiet resentment at work that colors everything, and you cannot even trace where it began. That vagueness is part of its power. Resentment that has no clear source is harder to address, because you cannot resolve what you have not yet named. Wanting to understand it is the right instinct. Resentment like this usually grows from something real that went unspoken, a slight, an unfairness, a need that got repeatedly ignored, small enough to swallow at the time but never actually digested. Swallowed enough times, these harden into a background bitterness that attaches itself to everything, long after the original cause has faded from memory. Start by getting curious instead of just enduring it. When the resentment flares, ask what specifically set it off, and follow the thread back. Often you will find a real, nameable grievance underneath the fog. Naming it is what lets you finally deal with it, by speaking up, by changing something, or by choosing to release it. You cannot set down a weight you refuse to look at.