Betrayal of Trust: There is no upside to betraying a trust. Trusting that you will do what you say you will do and what is expected drives the world. Anything less than that leads to damaged or severed relationships, unfinished projects, wasted time, re-work and lots of noise. So what do you do? Here's some pointers:
Always follow through
Walk you talk and do what you commit to
Be steady and predictable and finish what you start.
all from For Your Improvement by Korn Ferry