I tried to making a living at playing blackjack. I lost a lot of money. And I'm an amazing blackjack player too, to the point that I have to worry about casino surveillance and they're tactics to interfere with the outcomes of my game play. I'm talking about real world casinos. The only way to gamble professionally is to "Hit and Run". Play for no more than 1 hour per gambling session. The longer you gamble the more likely that you'll lose.
Does this means that you have stopped already making a living with blackjack? but you are still playing it occassionally unlike before? The hit and run strategy is true, if you ever hit a good amount then stop for the meantime and enjoy your profit.
Comeback again tomorrow and play again. But like the typical gamblers attitude, sometimes we aren't contented with a small amount or with a few wins, tendency we continue until we lose.