Giving up on an idea isn’t failure. It can be basic common sense. Both time and resources are finite. If you spend them on something that has little chance of working out, then for all intensive purposes you are wasting your efforts. This doesn’t mean you give up on the idea of taking risks or pursuing long shots, but it does mean you do so carefully with your eyes wide open and a willingness to pull the plug if and when needed.
There is a great benefit to working with a wide variety of clients for a number of years. You start to recognize patterns; seeing what works and what gets organizations in trouble.
There is nothing wrong with having moments of comfort and predictability in our lives. However, we must also learn to become more comfortable with being uncomfortable. In fact, we should seek out things that push us to our limits and challenge our preconceived notions of what’s possible.