In what ways can you find a solution to people struggling? What kind of techniques can they use to improve the writing process?

There are many people that are great critical thinkers, but are unable to translate their ideas to the keyboard. Sometimes they allow perfectionism to get in the way, while other times students are not strong writers. What is in their head does not translate to the paper. In what ways can you find a solution to people struggling? What kind of techniques can they use to improve the writing process?