Financial Security Or Passion (Go for my interest or go for secured job?)

I am going to finish 12th this year..and i have to take a decision as to what to do after my twelfth...

I love photography and has a passion of clicking photographs of wild life and nature....
The problem is that i don't come from a rich family background as such... So first my goal is financial security for me and my family which would not be possible in photography...

So What would be the best option for me is to do something that is a well paying job or to do what i love?

Any suggestions?

I am commerce student.

I strongly feel that heart is on the wrong side... But it more than often right...
Go With your heart dear