I believe that the human life is based on thoughts. But what is thought? From where thoughts are coming? How a beautiful thought can come into a worried mind?
Like you, I also believe that the human life is greatly based on thoughts. It suffices to say that if, for example, you think that there is lion at your entrance door, which is not the case, and you are inside house you do not leave you house. As a psychologist. I cannot define what thought is. Thought is what I am doing while answering to you post. Our thoughts come from people as a whole and immersed in a socio-cultural context, even though it is often said that our thoughts come from our minds and brains. A beautiful thought can come into a worried mind when, for example, our embodied mind thinks positively.
Taking into account that thought is: the ability of people to form ideas and representations of reality in their mind, relating to each other. "human quality", the part of the human being in which it is considered that the ideas formed by the mind are stored, it is possible to have worries, besides thinking about beautiful things to release tensions.