hellmuth, I would not stop working! forget that, not a good idea! why? cause you WILL be broke one day and then you'll have to look desperatly for work. (not an option).
Here's what I do. I work 38h/week, so only weekends left for playing hardstyle.
In the week you can start exercising on pokerstars
. As I read from your question, I don't think you're ready to make it already at the 1/2 blinds especcially not when you will have to put your bankroll at risk for living.
Try to build a bankroll on pokerstars (wich is really hard) I recommend to deposit min 100$ a month on pokerstars and play tournaments. In tournaments you will make a lot of mistakes wich you can evaluate after the game without losing money you can't afford.
If you think you're really ready?
go on friday or saturday (only 1 day) to casino. Start with regular freeze-outs and when you cash there you can try your shot with a small piece of your winnings at the cashtables for an hour or 2 maybe 3 (but trust me after a freeze-out you'ld better walk home if you win something)
When you see you can handle the players there at your local casino and you have a read on several guys, cause at a casino you will see the same people over and over most of the time then you can start your journey on the fulltime (friday or saturday, leave the freeze-outs for what they are) 1/2$ stakes.
On sunday you evaluate your game of the week by using pokeroffice, holdem genius or whatever there is on the market that is recommended. ( I prefer pokeroffice)
And from there on you will see that your game has a lot of improvement and then you can start investing online tournaments if you like, or just go for bigger cashgame at the local casino...I don't like to play cashgame online, but that's my opinion.
==> reason: pyramid system...a lot of players have huge bankrolls wich just will crush yours!...
Im playing 2/4 cashgame live now, difficult and a lot of aggressive players.
So unless you are confident about your game and you think you can handle it, I would just start like I said ^.