Hi there. How many of you guys day trade etc to earn a living...

Hi there. How many of you guys day trade etc to earn a living off, Or to earn extra to pay of ya mortgages etc. Just looking at getting into it a bit more seriously now after been playing around for 6 or so years now. As I do have a full time job now, I'd like to start buying say 10k worth, and just going for a quick 10% gain and then sell.. I know it sounds easy and yes it can go the other way quite easily. But do you guys do this? Hows all the profits work etc ? Doesn't all the profit get added to your yearly earnings etc ? Was just wondering with tax purposes that's all. Thanks for your advice