Margaret Thatcher was not a malicious person. She was a person who couldn't see, or didn't want to see, the unfairness and disadvantaging consequences of the application of what she thought to be a renewing ideology.
Don't put your life on hold so that you can dwell on the unfairness of past hurts.
Who ever said the world was fair?
if you do one good deed your reward usually is to be set to do another and harder and better one.
Do not complain of life's unfairness. It is never fair - at best it is impartial.