Where can I find the best job for me?

I am 19 and I am just looking for a means to an end, but hopefully one I can bare. I left school early with no qualifications and failed to complete 2 separate years at college due to what I can only honestly describe as a lack of discipline (cured now :P). I consider myself smart, but obviously no employer will see it that way with no education worth mentioning. I have had 4 part-time jobs and 1 full time (not in that order, and I was not fired from any of them) since leaving school, and I have a qualification in Boxing Instruction, I was hoping to get a job as a personal trainer or gym instructor but that isn't really working out as none of my local gyms are hiring right now. My sister had the idea of teaching a boxing cl at the local community centre, but being unemployed I cannot afford to buy equipment or to advertise, so I need SOMETHING. Through a combination of weight training and kickboxing I have great strength and stamina, so I figured it wouldn't be too difficult to find a job in labour, but most companies want to see at the very least high school qualifications. I also thought about amateur fighting but I STILL need money to spend time in the MMA gym where I train. Can anyone offer me any tips on part time or full time work, even if it was just something to help finance my trips to the gym. Thanks in advance.