Try to get a well paying job, live below your means and save. I have my Pipe fitters ticket which allowed me to work out of town on Industrial jobs and save a ton since all you do is work. I could work 6 months, take home 80k, and have the rest of the year off to trade. The quality of life is rough, but it was well worth it.
In 1973, when I was a junior in high school, my cousin and I bought soybeans before the Russians bought our crop. I invested $1500, and so did he(cousin was a runner at the CBOT). I ended up making over $60K, which I promptly lost within 6 months. Kept trading over the next few years, playing poker, making book, and buying and selling substances. In grad school, scraped together $9K to trade mini contracts at the old Mid-Am. Turned $3K into about 30K in 3 years while doing the grad school thing Leased a big seat after grad school, and started trading spreads(exchanges don't impose margins on locals for spreads, it's all marked to market). By '83, I was pretty secure and on my way. Been doing it ever since without trading money for others, or having another job.
Made a little money in the music industry, mostly in commercials. Now that I mainly just trade, I often ask myself why I ever chose 2 such ridiculous occupations.