Before you give up your day job, make sure that you have what it takes to make money at poker.
There is a lot more pressure playing poker full time, compared to part time. When you are playing full time, you seriously can't afford to lose, because your entire life relies on you making money. Wheras when you hold a job, you can afford to lose, as you have a wage backing you up.
Just a note, I couldnt draw a link between your best mates mother passing, and you decision to play poker full time. Although it is sad that his mother has passed, i think you are using it as some type of excuse to justify why you are going full time. If you need to try and justify why you are going full time, you are probably not quite ready to go full time.
Do you keep records of your poker bankroll. Because if this indicates that you are making a steady amount of money, that is your best guide.
Rellying on poker to supply you with a weekly wage is something you need to tink serious about. It can be done, but it is not something that you should take on lightly.