During

Help the client keep time with words like "you only have 2 left" or "you're almost done, 1 more minute>"

Be encouraging with words like "you've done it before, I know you can do it."

"Dig down deep."

At Rest

Ideas that need to be processed, to be thought about--even briefly--need to be put out there while the client is resting and can think about what you're saying.

For example, metaphors or analogies--

At the end

When the client's feeling great because he's finished is the time to reinforce progress so he will be motivated to come back tomorrow.