BJ for a Living

Just how possible is it to make a living playing Black Jack.

I have played a lot over past 18 months and have done well and keep
thinking that if one were to set a goal of winning 500.00 a day playing 5 days a week that would be over 100k per year.

Now, it has not been that difficult to go in and pick up $500.00

So...can it be done on an ongoing basis?

I know there are folks who make a living gambling.

It seems to me to be a "if it's too good to be true it probably is not " deals....

Any commentary or advice will be appreciated