Self-help books help you to become a better version of your present self.
You become better by adopting better thinking.
Past has no power on your present but if you feel it has means you are allowing your past to interfere in your present.
Life is a blessing for those who have learnt how to look at life to make it a blessing.
Until you are passionate to become a better version of your present self, no way you can gain wealth, fulfilment and success.
