I used to work for a telemarketing company when I was 18 selling long distance. About 20% of the people cursed me out as they did not want a telemarketer calling their house. That job was not fun but it helped me get over my fear on the phone. I owe a lot to that job and in life we can attribute a lot of our growth to the times where things were NOT that fun.
Because of the encouraging of recruits to further recruit their competitors, some people have even gone so far as to say at best modern MLMs are nothing more than legalized pyramid schemes[4][19][20] with one stating "Multi-level marketing companies have become an accepted and legally sanctioned form of pyramid scheme in the United States"[19] while another states "Multi-Level Marketing, a form of Pyramid Scheme, is not necessarily fraudulent."[20] In October 2010 it was reported that multilevel marketing companies were being investigated by a number of state attorneys general amid allegations that salespeople were primarily paid for recruiting and that more recent recruits cannot earn anything near what early entrants do.[60] Industry critic Robert L. FitzPatrick has called multi-level marketing "the Main Street bubble" that will eventually burst.[61] 

Influence – John C. Maxwell says that a leadership is influence, nothing more and nothing less. Everything rises and falls on leaderships, so it’s an essential attribute for success.  Influence is also used to effectively and persuasively communicate the virtues of a good product or service, and to get people to say YES!  We also know that at sales.