Mitch is right. It isn't impossible but day traders that can just pop out of nowhere upon losing their job and 'consistently' replicate great weekly earnings are far and few. They are the exception, not the norm.
You're more likely to lose money trying to go head first into something to replace your steady income. Unless you have time on your side to trade and learn, there are those who are gifted beyond belief who spend a lifetime learning and developing a strategy that works, and works well.
Some do it in next to no time, but as said they are the exception than the normn. I too have gotten serious (bought the software, invested the courses etc recently) but this compliments my casual approach to being int he market these few years since graduating.
Most of the 'experts' will tell you in the field, and I'm talking about successful australian personalities travelling around, educating, advising, not just any joe bloggs hot copper 'if i put my mind to it, i will', and that is it is a full time job, and it requires just like any skilled occupation - time and experience.
You don't wake up and start trading similar to you wouldn't wake up and be a tech programmer by reading books day and night for a few weeks.
I am an optimistic person too but believe in being a realistic optimist, and I know you say you can do anything you put your mind to - which is true, but from what it sounds liek you need a wage/job to support you now, and that emotional side /pressur eto 'earn your weeks wage' may put you in risk of losing money.
try and find a job and trade/invest short term on the side. Nothing wrong with buying and selling at the beginning/end of day, while working a full time job.
Paper trade, and practice, practice. I just bought the IC investor software - comes with simulators, but i think there are some other software that do too.
