Mantras are strong, positive statements powerful tools for improving self-esteem and confidence. Through regular repetition of any particular mantra, the subconscious mind comes to terms with the message and it becomes normal to the subconscious mind. Therefore negative self talk is replaced by positive messages and ideas. You can create mantras to achieve anything you want, to improve any kind of situation, and to combat any kind of stress: fear of failure, lack of confidence, pain, anger.
Mantras can be general or specific, they are best kept short and simple, and should always be positive rather than negative (‘I am making it in life’ not ‘I’m no longer struggling’).