Course is Critical Thinking Strategies for Success by Richard W. Paul and Linda Elder. Paul and Elder recommend completing a journal and analyzing the answers.
Questions: When did I do my worst thinking today? When do I do my best thinking? What did I actually think about today? Did I figure out anything? Did I allow any negative thinking to frustrate me unnecessarily? I I had to repeat today, why would I do differently? Why? Did I do anything today to further my long-term goals? If I were to spend every day this way for 10 years, at the end, would I have accomplished something worthy of that time? 
All I need is 300 words, using the text Paul and Elder as references