We are all wired to look for the best in everything- so long we can afford to pay for it. We feel bad when fail to find the best or when we are tricked to believe its best when it isn't.
Many freelancers leave money on the table because they are not able to handle additional tasks proposed to them by their existing clients. Reason? Most of them are worried that they will fail to deliver because they lack the desired skills to do the job. Moreover, they are afraid to hire their fellow freelancers to do the job.