Honestly, it sounds like a 'fake' negative.
It sounds like you don't really want to share something that you're actually struggling with.
And you should.
And then you should explain the steps that you've taken to improve it.
They'll know it's honest and they'll appreciate your transparency.
Best,
Cristian
Cristian is giving you a high-value signal here, and he’s right: "I get frustrated by slow processes" is a classic, safe answer that, while technically true, is used so often it acts as an immediate red flag for low self-awareness. It doesn't hesitate the interviewer so much as it confirms you're playing the generic interview game, not the strategic one.
The reason this answer fails is twofold. First, it’s a strength in disguise, which defeats the purpose of the vulnerability check. Second, consulting, especially at the senior level, is inherently slow—it involves managing internal politics, dealing with slow-moving client bureaucracy, and building consensus over months. If your key weakness is impatience with slow processes, the interviewer hears: "This person might struggle with the reality of client relationship management."
Instead of focusing on speed or perfectionism, pivot to a vulnerability related to interpersonal execution or management style that is demonstrably coachable. For instance: "I have historically struggled with effective delegation because I felt accountable for every detail, but I am now systematically using time-blocking to hand off tasks and trust my teams." Or: "My default is to focus on pure data when giving feedback, and I sometimes overlook the emotional context, which I am actively working on by pre-drafting my delivery methods."
A strong weakness shows maturity and self-reflection. They are testing whether you know how to improve. Pick something real, explain the impact it had on a project, and detail the systematic steps you are taking to address it. That is the transparency they appreciate.
Hope it helps!
