I would choose something I was passionate about, and actually that is what I did. My criteria was that I wanted to be challenged, and I wanted to make a difference. I also wanted to be able to make a living for myself without depending on others. I did not want to be rich. Every time I have chosen a job because it paid more, I have been miserable.
I highly recommend that you look up the Myers-Briggs Type Indicator on Wikipedia via eNotes. You can also also take versions of the Myers-Briggs test online for nothing. Your result should give you an indication of what kinds of professions your are suited for. The more you know about yourself, the better are your chances of finding the right profession and avoiding the wrong one. The Myers-Briggs Type Indicator was developed from the findings of the famous psychologist C. G. Jung, and it is specifically intended to help people find out who they are and where they belong. These are possibly the most important things there are to know, and they are worth a lot of time and thought. There are other self-tests available online, and many are free of charge. You might also look up Jung's Psychological Types on Wikipedia via eNotes.
I have been teaching since 1981. For me, you have to be able to picture yourself for the long term, doing something everyday that will fulfill you. It must be something you want to do, or would like to do, or, you have an interest in. If not, it will feel like a jail sentence(it is just as long as one!). Therefore, pick something that suits your interests and personality-if you are a loner, maybe try accounting or research. A people person--advertising, communications, teaching. It depends on your personal talents and interests.
In selecting a career, certain criteria should be considered. As the previous writer stated, choose a profession that is both fascinating and appealing. If one intends to make this his life's work, passion must be at the top of the list. There is nothing more distasteful than going to a job that no longers attracts the person's interest.
Mother Theresa declared:
The miracle is not that we do this work, but that we are happy to do it.
Secondly, examine where the profession falls within the technologically based future. Will there be a need for this job now and in years to come? How will the profession change with the times? Questions to answer before making the final decision.
Finally, what kind of life style will come with the career? The time involved, the cost of the education, the best location for the profession--these must also be given consideration.
What does the person want from his life and what does he want to achieve? Select the career not on what you know, but on who you are. This is one of the most important decisions made in a person's life. Remember this famous quotation from Confucius:
Choose a job you love,
and you will never have to work a day in your life.
Absolutely first and foremost: Am I interested in this field. If you aren't interested in your profession you will be bored and unsatisfied everyday of your working life.
Then you look at pay and working conditions. You also consider what kind of demand there will be for this job in the future.
I would look for what I love to do and where my talents are best served. I want to help people. I want to make the earth a better place for the posterity of humanity. Right now, I think that I can best serve others by working to achieve a cost effective sustainable energy source.