The Contribution You Make
Should you be taking credit for that?
Project managers: the project being smooth and successful can’t be your success, if it being bumpy would not also be your failing to work on (rather than the fault of some other stakeholder).
Sales people: closing that big deal can’t be your success, if it’s loss would not also be your failing to work on (rather than the fault of process or support).
Leaders: a business moving in the right direction can’t be your success, if it going in the wrong direction (or flatlining) would not also be your failing to work on (rather than the fault of the economy or your team).
The contributions you make produce the results in your wake.
If you don’t like the results, change your actions, because it’ll only be your success if you can first take responsibility for the failure.