The following advice is from the Mayo Clinic on reducing stress by eliminating negative self-talk. First, Identifying Negative Thinking: (1) Filtering – magnify the negative aspects of a situation and filter out all the positive ones; (2) Personalizing – automatically blame yourself when something bad occurs; (3) Catastrophizing – anticipate the worst if something goes wrong; (4) Polarizing – see things only as good or bad, black or white. There is no middle ground.
Here are some ways to practice turning negative thinking in a more positive and optimistic way - Focusing on Positive Thinking: (1) Identify areas of your life that you think about negatively. Start small by focusing on one area to approach in a more positive way; (2) Check yourself throughout the day. When your thoughts are negative try to find a way to put a positive spin on them; (3) Be open to humor -When you can laugh at life, you feel less stressed; (4) Follow a healthy lifestyle – including exercise, healthy diet, and learning other healthy options to manage stress; (5) Surround yourself with positive people; and (6) Practice positive self-talk by practicing this one simple rule: Don’t say anything to yourself that you wouldn’t say to anyone else.
I have included the Mayo Clinic link if you choose to read more on reducing stress by eliminating negative self-talk.