How to Write a strong thesis?3 jobs. Physical Therapist, Personal trainer, Counselor. Job that best fits me: Counselor. I need to write a thesis...

The strength of a thesis statement is not just in the
statement itself but the entire paper.  In order for you thesis statement to be strong,
it has to be a provable, supportable statement.  You want it to be broad enough to
expound upon the idea but narrow enough to provide focus. 

As far as
filling in your statement above, you need to decide what you are tyring to prove.  Why
do you think being a counselor would be better than the other two?  Maybe becoming a
counselor would be better because you would be able to make a lasting difference in
people's lives.  Maybe becoming a counselor would be better because it is the job most
suited to you. 

Decide what you are going to prove with the rest of
your paper before you finish the thesis statement.  Once you know what you are writing
about, the thesis statement will be much easier to finish.