I chose chemistry in college and university.

But after several years it became boring.

I was invloved in a research project and we were using very toxic chemicals, but no one was paying attention to our safety.

So I said "Someone should be responsible for the safety of the people working on this project."

I'm sure you know what happened next... the project leader told me to take care of safety.

So, I returned to college to study 'occupational health and safety', and I found it very interesting.

Later, after the project finished, I started to work as a safety consultant and trainer, and I did that work for 25 happy years.

Now that I am retired, I enjoy doing English language tutoring.

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"Today, the average person changes jobs ten to fifteen times (with an average of 12 job changes) during his or her career."

http://jobsearch.about.com/od/employmentinformation/f/change-jobs.htm

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It is better to do the work you love, than to do the work you don't like.

Money and income are not the important considerations.

Good discussion Leyla...