There's no point in worrying about situations that are outside of your control, says Weeks. Learning to accept situations that you can't change can go a long way towards improving your stress levels. CBT (Cognitive Behavioral Therapy) techniques can be extremely useful for changing your thinking patterns and is used a lot in counselling.
Get into the habit of talking to yourself positively, adds stress expert Dominic Knight. "Any human behavior that you rehearse continuously for approximately three weeks becomes habit forming."