Thinking about the consequences of failure, ignoring your feelings and engaging in detailed planning don't sound as fun as advice like "Follow your passion!" or "Stay positive!" But they have the decided advantage of actually being effective -- which, as it happens, is exactly what you'll be if you use them.
Procrastination is the thief of passion. Do you find yourself accountable to other people yet you delay doing the things that would support your personal and professional dreams? It's time to be courageous and move through any fear and resistance. You deserve your dreams and they are not going to just appear without taking steps toward them.