We all have worries, and most of our worries come from the past or the future. We worry about things even when they may not be true, and may never be. Conditioning our mind to think in the present moment will allow us to eliminate negative feelings.
A Nietzsche Uberman is someone who questions the supposed truths of his life. Worrying about what may have been true, or what may come true, is not emotionally productive. Of course, life brings inevitable conflicts that we must deal with. However, thinking about the future will not be productive for our mental well-being. For example, if I thought I was going to be fired from my job, I could go through the necessary steps to get a new job. However, going home at night and constantly worrying about it would be unproductive and unnecessary. Although it may not seem possible, we can control our thoughts and enjoy the present moment.
You may still be wondering why this concept has anything to do with being a Nietzsche Uberman. Well, Friedrich Nietzsche was a German philosopher who questioned the value and objectivity of truth. When we are convinced, in our minds, that something is true, it does not mean that it is actually true. Likewise, even if it is true, we must not allow this potential truth to interfere with our happiness. Negative thoughts have the ability to take over our minds, but we can observe and control our thoughts. We must do what we can and not worry about what is out of our hands.