I’ve made many mistakes in my life, and I’m far from owning an empty closet, but I’ve learned something from every time I fail, and I’m willing to see where I could have chosen a different approach. The point is though, is that there are things in this world that we as humans, and professionals, can, and cannot do, also known as self awareness.
We know what we’re capable of, and what we aren't capable of, whether we care to admit it or not. Understanding these limitations and capabilities are crucial to our success as individuals, but also to ensuring and perpetuating the cohesive bonds within our teams.
The problem is that there's two types of people here. The rational side that understands all of this and has no problem being honest when they get a little over their head, and the other side that can't admit it. Those are the smartest ones in the room, perpetually running their mouth into a corner they can never back out of. This usually ends with them having no discernible choice but to agree to something they have no business doing; ultimately compromising their clients and the teams around them.
Detrimental ambition happens, I get it, but you're not doing yourself any favors. Being able to accept a little guidance and advice from time to time really does pay off throughout life, no matter how high on the food chain you think you are.
Between you, your team, and your clients, there must be a reciprocity of confidence that everyone will be where they need to be, operating in the best interest of the mission. Any deviation from that is unacceptable. Maintaining the discipline to operate in a team-focused manner day in and day out, can become a taxing endeavor, and much less lucrative at times; but it’s a lot easier than trying to rebuild a compromised reputation because your ego blinded your focus & fractured your relationships.