How to Say No
no by saying yes
say you will do it and not do it. Can be risky, not often advised.
no by counteroffer
a better version being "no by better idea"
no by negative sell
basically using reverse psychology.
no by leverage
say no because you can create consequences for the other person.
no by priorties
Say that you have something else that needs your attention right now.
no by constraints
Say that you don't have the bandwidth or availability for something.