Contentment is something to learn. It is not the natural propensity of man to be contented. One of the worst lies the devil can sell to you is the idea that your satisfaction is in your future.
How you handle situations, shows how much understanding you have of the Word of God. And in dealing with insecurities, this is not a psychological topic or one for those that are babes in the kingdom! And in dealing with it, the word of God is enough!