Think of all the times you said yes when you really wanted to say no. Now is the time to stop stressing about what you really wanted to say. Just say no! Saying no can be hard especially when it someone near and dear to us and the need seem real, regardless of who, what, where and how we must start taking a different approach and it starts with saying no! Try it, you will feel so much better.
Remember when you say yes, you are accepting everything that comes along with it. Cheers!