Think about the reasons for your negativity, and change your mind after finding the reasons. You can change your mind by reading books such as Caigen Tan and Night Talk Around the Furnace. Take a piece of paper to write down your goals, then take a piece of paper to write down your current situation, see how far you are from your goals, find ways to achieve your goals, think positively and act, and ask yourself why if you don't understand. For example, why do I suffer from loss, because I am afraid of losing something, why am I afraid of losing something, because I am greedy, so I ask myself, and then I find my persistence and get rid of it. Slowly, it will get better.