Excellent post @kaylinart! The sad thing about many who decide to "try" self-employment is that they actually often have good and viable ideas and plans... but they just quit too soon.
Sure, there are some who just have ridiculous expectations (Mercedes'es and mansions after six months) ... but in many cases people just think what we do is "easier" than it really is... patience and perseverance are possibly THE most important qualities for successful self-employment.