playing for a living

[pokerb]

as i am sure this has been discussed before but i want to know from the guys here that play cards for a living. how hard is it to solely depend on playing cards as the ONLY source of income? right now i have a full time job and play online part time but i am considering playing full time. i built a decent enough bankroll but just dont know if i have the balls to pull the trigger. i know that there will be rainy days but should it deter me from giving it a shot? thanks