I have always been the self employed type. As a kid my first jobs were mowing lawns, raking leaves, shoveling driveways, pulling weeds/gardening, painting houses and stuff like that. My Mom worked in the copy center at the local college and so she would run off hundreds of flyers for me and I would cruise the neighborhood on my bike stuffing mail boxes offering my services. So it's no wonder why today I am a self employed insurance agent.
My Dad, a career educator and ex USMC, had about 5 jobs. One of his jobs was that he owned and operated a sporting goods store when we were kids so after school I would walk to the store and work there until dinner time. Here are some things I remember about those days that may be of value to you:
1. If you thought there was nothing to do you found something to do. The motto at the store was "find something to do". If you had 10 minutes that meant you would find a 10 minute job. If you had 5 minutes you found a 5 minute job. You never, and I mean never, sat around and chewed the fat with co-workers or customers. Comisserating was unthinkable. You had a positive attitude....if not you didnt fit in and you were toast.
2. As the son of the owner I was expected to arrive early and leave late. I was expected to volunteer for the jobs noone else wanted.
3. We never had to prioritize jobs because they all had to get done so it never mattered what we did first.
4. As a young employee you were very respectfull of older employees. These were the days when you still used Mr. and Mrs. to address your co-workers. If the words please and thank you were absent from your vocabulary you were toast. If you couldn't greet someone with a firm handshake and a smile you were toast so leave the knife and the attitude at home and arm yourself with positive attitude and a warm personality. If you couldn't maintain eye contact while having a conversation you were toast. If "um", "kinda", "ya know", and "like" dominated your every sentence you were toast. If you couldn't assume responsibility you were toast. If you were dishonest you were toast.
If I had to do it all over again I would go with an engineering degree and then follow that up with an MBA. Life is hard enough so never become your own worst enemy. You must be a team player and must become relentless about exceeding expectations. Dont hesitate to be your own advocate and you must be willing to work outside or your comfort level.
Good luck.