Helping people. I would argue that if you are honest, passionate, and work hard, you are by definition helping people. I'm guessing that you really are looking for a job that allows you the gratification of seeing how what you do helps people. Most careers in math, science, and engineering require interaction with people so I would not worry much about finding a career that helps people. Helping people is more about the job you select within the career than the career you select.
Art. Careers such as architecture, design and interior design are most typically associated with art. On the other hand, a friend of mine was a tile setter that did very high end work which could only be described art on the wall, floor and ceiling. I believe that if you are talented in many of the construction trades and you highly develop your skill you can properly claim to be producing art.
Math and Science. These suggest careers such as engineering, architecture, and education. Less obvious are careers in movie and theater industry related to set-making, lighting, and sound.
Taken together perhaps something that takes concepts math and science and presents them to the public suggests something like museum curator or educational writer/artist.
vern recommends the following next steps:
- Try to find an internship or entry level job at a museum or kids science center.