Since we live ever and forever, each incarnation is just a episode of our infinite existence. Is it important what we have been doing in previous incarnations? Of’ course it is. All our experience counts. Each of them influence what is now. 

Past lives define how You start you current incarnation. Karma (good and/or bad) works all the time including time when your mother is pregnant, time of your birth and after.

Children in their early age show interest in things which are appropriate to their last past live. This shows their continuum.

I am of the opinion that this is your right to know your past lives. All your past experiences have shaped You as You are now. This includes all positive and negative habits, traumas, addictions, paradigms as well as many strong relationships which may be now supporting or destroying. Many divorces follow situations when one of married couple has just met some third person who seems to be like known for ages. And it happened just in time when the marriage faced regular crisis. 

Seeing or knowing your past lives helps specially to those people who generally conduct themselves correctly but despite that they experienced some serious disappointment from others. In such situation to have happy life they need to forgive which may be not easy unless they learn how hard experience they have arranged to soul which became their tormentor in current incarnation. Knowing that and specially learning that with help of any method which allows to feel related emotions, ensures that they may feel gratitude how the tormentor “paid back” (following the cosmic law of compensation).

The best way to gather information is to experience your past lives during session like hypnosis, forgiveness session or other methods using alternating state of consciousness. 
However if You really do not want to invest your time in it and want to subcontract your past lives exploring, You may order it here: