Improving relationships is something we are all concerned with.
One easy way of improving relationships is trying to please others. What can make a relationship stronger than making the other person happy? This is what many of us think.
But the problem is when you focus on pleasing someone, you are restricting your focus. For example, you can lease a child by agreeing to whatever it demands. But doing so will not be in the interest of the child. In attempting to please the child, we may end up doing something against the child's welfare and development.
You can please your boss by doing things that will please him but this may not be in the interest of the organization. When something is not good for the organization, it won't be good for your boss also in the long run. So ultimately the boss will not be pleased.
Please remember that if you start with the objective of pleasing someone, you are approaching the issue from the wrong side. You can (and should) think in terms of being fair to others, courteous and polite to people but not in terms of pleasing others. A person getting pleased by what you do must be an incidental outcome, not the principal outcome.
I don't know the key to success, but the key to failure is trying to please everybody.