Saying No Nicely

 I badly need to memorize every single one of these ways to say 'No,' nicely. Especially these: 

When asked to do something optional that you can’t commit to right now:

I appreciate you thinking of me, and I’m honored by the request. But unfortunately, I don’t have the time to give this my best right now. I think you would benefit from finding someone who can devote more time and energy to this project.

When someone asks you to do something that your much-less-busy coworker could do:

I would love to help you out, but given my schedule, I wouldn’t be able to get this back to you for a couple of weeks. If you would like to have this turned around sooner, I recommend that you reach out to __________. Does that sound good?