my spontanuous answer would be, start with prayer. go from there… talk to Jesus about it.
edit: You have asked, how have WE done this.
I am also still learning. I have been struggling a lot with fears. Learning to completely TRUST Jesus/God, and His mercy, is very important for me to learn to accept that there is insecurity in life.
Also I remember a preist saying something like this:
If God is in the first place, then everything will be in its right place.
Maybe also: Learning to be thankful. In good moments, say thank you. Rejoice WITH God. Let Him be part of everything. This kind of comes automatically with time. Of cours,e probably not always consciously. It’s more like… a given, God is always there. A knowing: Everything is from God. All I do I do with God/for God.
Also of course: By loving our neighbors we give ourselves to God. By being good to them, as we would want them treat us too. By wanting the good for others, praying for others, forgiving others.
Etc,