To us humans, life does not come equally. Some are born rich, some are born poor. While some have great families and wonderful childhoods, for others it is not so. Even if we were born in the same family, but in a different country or in a different culture, we wouldn’t be the same person. These are the facts that we cannot change most of the time.
I think the only thing that treats people equally is time. Leaving the relativity theorem aside, time passes at the same speed for all of us. That is, a unit of time has the same value for everyone. What we do in this unit of time is also largely up to us. And I believe, how we use time determines the biggest difference between us.