Hi, im 19 year old, i'm lost

, i currently have a cdl, and im certified welder, but im to young to get a insured, and i dont wont to go beck welding,do to health problems in pest, all the jobs in my area are currently at 10:00 $ in hour, and the rest wont like 2 to 4 years of college,for better pay, witch i really think its a waste of time, what happins if i put 4 years into a subject that i realize i dont like once i start practicing it , im stuck rite !? im one of those, if a chance appears i grab it, i try to make profit of some kind ,well the point is i ran out of ideas, and i really do wanna start some kind of home business,is it passable? and what it takes? please give me some examples of dif types of home bz's , is it passeble that i can order of some kind of peaces of something and i put it together at home and resell it, and make a crumb of profit ? thanx