Being self-employed can be incredibly rewarding, but it isn't for the faint-hearted. You have nothing to fall back on except your own skills, drive, self-confidence and ability to organise yourself. Do you have the self-discipline to stay on top of multiple projects at a time? Can you find it within yourself to carry on when your efforts to find work get turned down time and again? The buck stops with you.
As well as your own personal motivation, there’s the question of whether your job lends itself readily to freelancing. And if it does, is there a demand for your skills? Do your homework and make sure that there’s a market for your line of work and that it’s not already saturated with competitors.