Fear is something everyone has at one point or another in their life. The problem with fear is that it can become a driving force in your life and every decision you make is out of fear. Fear shows a lack of trust, you can fear your husband is going to leave, because you don't trust he would stick with you no matter what happens. When fear becomes a driving force in your life, as a Christian, you are not trusting God.
Absence of fear doesn't mean you think nothing bad will ever happen, it means that you trust that God is sovereign and he will use all things to help grow you and has a different plan than you thought. Everyone goes through tough times, it is all how you choose to deal with them and let them impact your future decisions. Learning to give all things to God is hard, even harder is leaving them there. It is like we take the ball from him and play with it a while, when we have no business playing with it in the first place. He is the only one qualified to take care of the things in our life.
Learn to give to God with an open hand, and let go of fear, for God is not a God of fear.