We can really change our lives, it can happen.  Happiness is a by product of who we are and happiness comes from God.  First, we have to get closer to God and to do this comes first with  a sacrifice of our worldly ways.  For many this is a difficult process but of course it brings great joy and peace.  Peace comes from God and in order to obtain peace we have to pray and offer up our sufferings.  Also, simply put we have to,be in constant conversation with God.  

We must not be afraid to open ourselves up to Him.  He loves us and wants us to love Him.  If you are struggling In your life He is here to help you, to listen and touch your heart.  Love Him, speak with Him and He will listen when no one else does. God Bless You!