Okay, just got the sack and now suddenly thrust into the world of the entrepreneur! What next? First thing is to think about what you have been doing that actually had someone paying you previously to do it.
Also what do you like doing? What do your family and friends compliment you on being good at? Do any of these things click that you may be able to make a living out of them if you went into business for yourself? Say, at your last job you were a good organiser and you love working with people and your friends have said that you take great photos!! Perhaps you could start a corporate photography business whereby you organise tour packages and you take all conference tour photographs for major corporations??? This may not be the perfect business solution but I think you get the drift, that once you are offered a challenge, turn it into a positive and an opportunity to do what you love doing and get paid for it.
So what's stopping you? Haven't been fired yet, oh well, your luck may change tomorrow and you get fired!! Good Luck.