Knowing when to say ‘No’ is just as important as ‘Yes’. When something has a consumes time, or has a high emotional cost, you should say ‘No’ to it by default.
By not sticking to this rule a lot of time, money and effort were wasted. Ensuring that a lot of valuable things did not come to fruition.
When you get a request, evaluate it mercilessly. If the importance is null. Say ‘no’ and be clear and ruthless.