Check out this video on YouTube:
Decision Making
Read this article from Brain Facts about decision making.
Life Hack Tips: The Art of Saying No
Read this article from Lifehack about saying no.
How Long Does it Actually Take to Form a New Habit? (Backed by Science)
Read this article from James Clear about habits.
10 Ways a Life Coach Will Make Your Life Awesome
Read this article from the Huffington Post about coaches.