I met with Uncle Ray & Aunty Siew Yong (who is my parent's old friend)

Ray gave me an inspiring way to say no:

At your age, you should say "No" to the things you don't like, in 1 out of 5 times.

But for my age (51), the ratio will be 1 out of 2. (Because of the age, the experience and the status that can make him do so)

LOL, good maths with some great idea behind :-)