As a beginner in graphic design, I had so much troubles getting clients. Until I learned that you could reach out to clients instead of waiting for them to reach out to you. As they say, "if Muhammad doesn't go to the mountain, then the mountain will go to Muhammad".
This book contains everything I've learned so far from Cold DM and how it can be used. I believe that with the proper application and guidance, you'll get the best result from it too.