With the verb have, always use opportunity. The word possibility is more often used with "there is":
There's a possibility I might move to England next year.
I have the opportunity to work in my company's London office.
Also, possibility is neutral - it means maybe the event will happen, and maybe it will not happen. The word opportunity is a little more positive, it expresses the possibility for something good. So we can use possibility with good or bad things, but opportunity is usually used only for good things:
I'm worried about the possibility of losing my job.
I have the opportunity to do a study abroad program.
You should take that job. It's a great opportunity for your career.
The word chance is more informal, and it can be used for possibilities or opportunities!
This project has so many problems, there's little chance of success.
Is there any chance of rain this weekend?
The boy got a chance to meet his favorite professional basketball player.
I was chosen to appear on the TV show! This is my chance to become famous! = my opportunity to become famous
If there is one thing that the women of today need to learn from her, it is accepting and loving yourself for who you are. Many might consider her over bite and huge hips a flaw. But she does not. She admits to having a phase when she was younger when all she wanted was to be on the slimmer side. But today if you ask her, she would simply ask why fix something when there is nothing with it.Her beauty is not just about her looks but also the love she feels for herself. And that alone is reason enough for many to yearn to be like her.