Amigo
Ego is the primary bane of relationships. Putting yourself above others will lead to isolation and victimhood. At first glance, putting others before yourself is the answer.
But is it?
No one respects a doormat, much less befriends them. If everyone put everyone else first, it would be a race to the bottom because of the irreversible evil in the world. (John Lennon imagines otherwise) Let’s assume a bad guy breaks into your house and wants to have his way with your wife. Are you going to put him first?
Putting yourself first is less than fulfilling (I’ve checked). The key is to love others AS yourself and allow your maker to guide you.
Less ego, more amigo.