Remember Their Words

Remembering how people insulted you before is the greatest and fastest way to get motivated to do something that looks impossible.

When someone recalls the (insulting) things that people said to them before, likely for motivation to complete a difficult task. There might be floating faces of those people flying around their head with echoing voices also appearing. After remembering how they were insulted, the person will get fired up and ready to prove those who doubted them wrong. A Training Montage may follow soon after.