What makes you money in your job, doesn't necessarily make you money, when freelancing. Many freelancers have to learn that the hard way.
Are you exceptional good in your job?
Do you believe that your boss is not paying you enough?
Are you tired of working for someone else?
Then you are probably thinking about working as freelancer. Beware that almost everything will change once you have “fired your boss”.
Who will give you the paycheck?
Who will tell you what to do?
Who will make you to work harder?
Knowing the correct answer to those questions is one key ingredient to your success as freelancer. The freedom, which comes from having no boss, is dangerous to those with no plan and little or no discipline.