Leaving work for trading.

I have been trading for a very long time, I have loosely tried this before but I wasn't successful before so I went back to work and while working, and trading, I made money. Now I have money and am going to be quitting my job at the start of February. We are going to be doing an addition and renovation, I will quit to work on this project and at the end the house will be paid off and I should have some cash left over. My wife still has a good job and will keep it and she is behind me in this decision. So even if all goes wrong and I end up losing the rest of the nest egg, which won't happen because its all cash now anyway, I will have a paid off house and I'll just go back to a different job, but I could likely get this job back I am about to quit. I can't really see a downside, and I would love to devote myself to this home for my families next phase. I'm not uber rich but I have made enough to be good and I'm going to start living!