Wanting to give up...

I just put in a 14 hour day. I dont think I can take much more of this. The sad thing is I like it a lot but its a bit rough. I dont know if its worth it all. If I can make the same amount of money elsewhere with less hours and less stress shouldnt I do it? Ill be straight forward with you all. In the next year or two I will be doing one of four things. Going to school to be a teacher, or to be an architect. Going into the military to fly helicopters, or going to China and eventually getting my PhD in Chinese history or something. Feel free to make your comments.
Even though Im good at sales I dont forsee me doing it for much longer. Ive gone far enough to realize that if Im going to do business it has to be MY business. Only then will I care enough about it to stick the hardships out. I need a job that has to do something with other then the bottom line. Teach, transport, design, learn. I dont really care much about money and I dont want profit to be engrained in me. I dont think any of you that read this could understand cause all of you have jobs outside of business or indirectly related to it. All I do IS business.
Enough of my gripes. Here is something positive. A guy that we did an interior job for referred me to a friend who booked with us. A lot of things had gone wrong on this job and I asked him why he referred me cause I was surprised. He said, "Even though a lot of things went wrong, Jeremy always did the right thing" I appreciated his comment. I like doing the right thing, even though it hurts at times. Its so easy for me to do the right thing for other people, why cant I do the right thing for myself? ..................