To start a business or look for a low paying job?

That seem to be my two options if I'm not made permanent after my probationary period... At my current job My supervisor don't like me n makes it look as if I'm inefficient... Its a great paying job that's hard to get into...n its highly unlikely I'll get another job that's pays like this... I have saved enough to start a small business in 7 months.

I heard a lot of success stories when it came to ppl starting a small business... Selling products n making a profit, than doing so for another company (having a job).