failcessful

When you are too good at what you do and you constantly fail by being too successful.

When you point out things to your management team that could save the company loads of time and money but they ignore you because they know it would invalidate them as management for not thinking of it.

"John would be a great member of the team if he wasn't so failcessful"

When you modify a system to make it more efficient but end up getting an entire department fired because your automation made their jobs necessary. Also managing to get you blacklisted for any consideration of promotion

"Roy was on the way to a promotion but that last automation made him a true failcess"

You make a car so fast that no one believes you can drive a lap "that fast" so you are disqualified based on the idea that you can't be that fast.

"Reginald would have been the top contender but instead he was too failcessful"