I get 200+ emails a day.
I read all of them. Yes, all of them :)

However, in the 30-40% I reply to, 90% of them are no.

Here’s what I say:

“I am completely blocked. Sorry, won’t be able to do this.”
“This is not priority for me right now. Sorry.”
“This will be a no for me. Not something I can add value to.”

Because if I say yes to them, I am saying no to my time with my family, my usual routine, my fixed workout schedule, my sleep schedule, and to all the things that I could have thought of, which my time commitment requires here.

Saying yes isn’t being generous. Saying yes is saying no to everything that is important to you. The last thing you want to sign up for.