I must come from a different planet. Some times i am amazed with people in business (any business) that know so few people.
I live in a small town, everyone knows everybody, this can be good and came be bad. But over all the national average are that every person in their life will touch 250 people. I previously worked in a business that banked on these statistics and its true.
If your so young or anti social you don't have family and friends to amount to something close to 150 personal contacts that you can go to and sell yourself. Why do you think you are suited for self employed? Have you just moved into town? did you just get out of jail? there is the old adage in the world, "Its not what you know its who you know".
In the advertising business there is a 3 to 5 % rule. Any advertising if its good should reap 3 to 5 % return. Same with family and friends. If your worth anything that one would trust you to do a service for. You should be able to sell 4% of your family/friends your services. OK i know not all your family/friends need a mowing service. But if you are close to your great uncle, you been to his house or he has been to yours. This great uncle well might know of someone that dose need your service. This is what is called networking.
A long time mentor of mine told me " you will never make real money till your age 45". At this time you should have the 250 friends/family number.