Due to their age, children are not able to comprehend all of the new adjustments. They know that their world is changing but they might not be able to communicate how they feel, what they need, etc. and you may see some changes in their overall demeanor. Having a counselor guide them through could be extremely helpful for you and them.
How you deal with the changes & transitions will affect them. If you are frequently angry, stressed, & spiteful, they will pick up on your demeanor; giving them the message that you are not okay, they are not okay, & they could begin to mimic those same expressions. You are bound to have hard days, but those days could be a lot fewer and far between with a therapist there to assist you.
and purpose in your life