Here's the deal... You can NOT play 4-6 or 8 tables and be successful. It is just plain stupid and not profitable in the long run. Sometimes even 2 tables is too much. I play sit n go's exclusively. Usually $10-$20 range. It is not about how many tables you play at once or per day. If you have patience, play EXTREMELY TIGHT AGGRESSIVE and pay attention to others play, you will see a profit. If you are trying to make 3K per month , bankroll management also plays a major roll. You can play a couple sng's a day, earn a profit and have the rest of the day to yourself. You do not need to play 20hours a day. If you play 1 table at a time you can actually be more successful and show more profit at the end of the month. By playing less tourney's a day, you are saving the buy in and also increasing your chances of winning by playing a more sound game. If you make $100 a day over the course of a month you will have 3K.
Play until your up $100 on the day and then enjoy your life as a poker play and go do something that your freedom allows you to do.

Good luck