Are poor people destined to become poor?

No - poverty is not destined. It can be hard to break out of if you are born into it, but it is possible. Other people are not born poor but become poor through the actions of others, so again, they are not 'destined' for poverty. To a large degree we are responsible for our own fates - there is no such thing as a pre-ordained destiny which is given to us at birth.