It has been said that you eventually become what you think about continually.
If, for example, you dwell on how to make more money, that eventually is the target of every waking (and sleeping) dream of your life.
Naturally, when you lose your money, then, you lose everything that makes you what you are-and so often, you lose those things which cannot buy money: health, peace of mind, happiness and friendships.
Likewise, if you think about what people's opinion of you is, your job, your appearance, your prestige, and so on.
The question we need to consider is what is worthy of my continual and deep consideration, if not myself? I would submit that navel-gazing is the fastest route to neurosis.
Mental health is most quickly achieved and held if one’s life focus is on God, the Father, who created you, and Who loves you eternally. But,you wonder, how do we “think” about Him properly?
The primary revealed source for that is the scriptures. This is a repulsive conclusion for some people who have been abused or mishandled by those who claim to believe the Bible. Yet where does the problem lie? Do we blame the Bible for others' abuse? Since emotions have been involved, this kind of thinking is not at all straight, but certainly understandable for anger and hurt repel them from the Bible. Yet they are confused because they are mixing up the people who purported to know the information in the scripture with the actual scriptures. There is nothing wrong with the scriptures-only with the “reporter” in this case.
It is similar to me adding figures incorrectly and passing the incorrect sum along to you: my inaccuracy handling the operation does not invalidate the entire mathematical operation of addition.
God remains, no matter what, the only one worthy of our focus and, specifically, the one to desire to be pleasing to above all others.
Once our resistance to the scriptures is overcome and we understand what we are reading, we have another hurdle to get over: we wish to hold on to the beautiful truths, those which reveal God's compassion and faithfulness. We need them to penetrate through the noise within our heads. The answer is that we need to meditate on God. A certain writer responded to this (language is a bit antiquated):
"(but)...I have no time for this work (of meditating on the scriptures). (If) you would meditate on God and the things of God, then take heed that your heart, and your hands be not too full of the world and the employment thereof.
Friends, there is an art, a divine skill of meditation which none can teach but God alone. (If)...you would have it, then go and beg of God (for) these things."
- William Bridge