Dream meaning?

A change of circumstances, living conditions, lifestyle or change in family dynamics/relationships.

In some way you are entering into some kind of an "unknown existance" in your Life.  Your dream shows it to be like entering into the foster home, which is neither good nor bad, as each experience is different, from one child to another child.  You don't share your feelings about your dream, so I'm just going to guess and say you are not looking forward to whatever you have to do in real Life.  I would tell you to take each step, one at a time, and eventually you will make it through to the other side.  

The dream might mean that new solutions or ways of life can liberate you from your problems but they will take time to stabilize and familiarize themselves to you so it is a balance.