Learning to say no (nicely) is key to effective leadership.When your opportunities exceed the time available to fill them, some things (ok maybe a lot of things) that you say yes to are counter-productive.Kindly saying no should become your friend but saying yes to everyone is going to result in disappointing everyone.Here is a six-step strategy to deliver a polite way to say ‘no’ that makes people still feel valued.Step One: Say you’d love to meet.Step Two: Affirm their intention.Step Three: Don’t commit on the spot. Ask for a follow-up.Step Four: Let them know you can’t help, but someone else can.Step Five: Be Firm.Step Six: Thank them.