Dear V, marriage is very complicated.  Unfortunately, it is often the children that suffer the most.  Talking to a school counselor might help you to understand the dis-function within your household, so you do not have to carry the burden alone.  Today, there are many community organizations available to help you and your family.  Your church pastor is also someone that will listen and you can talk to in confidence.  If you are unhappy and feeling alone, reach out to someone you are close to that can help.  Good luck dear!