How to figure out past life in chart?

I'm not well-versed in astrology, I know the basics, but I want to know how to look at past life in my chart. I was told the 12th house represents the 1st house in your past life, but I don't know if this true. Please give me any help and try not to go too deep into detail since I'm still learning. Thanks

Hi TT, I have always been taught that it was the 4th House, but having been there and done that it is not really in the chart as such. Best go to a therapist who specialises in past life regression and find out yourself.