There are no blocks.... If you prospect for more business, you get more business. That's it period. 

People who want and need more business must proactively go meet people and ask for their business. If you are advertising, sending email and marketing on social media those are passive activities... they generate some new business, but it will be slow and costly. 

Figure out who your potential future customers are and call them for an appointment. Go meet them at there home or business. Don't give up when some say NO. Kept up the activity, some will say yes! Over time you will get better, and your ratio of YES to NO will improve.  You can't control who will agree to do business with you, you can only control how many people you ask.... 

Make if fun to just meet people, find common ground and make a friend. Always ask for the order, if they say no, you still made a friend. Maybe they will be a client later!

 If you deliver quality products or services to the people who say Yes, you will begin to get referral business. With consistent and persistent prospecting the "Law of Momentum" will apply enabling you to grow and succeed yielding greater and greater reward for the time and effort you give.  

There are no Blocks -- Change your thoughts, change your world!