Frustrating too sympathetic for my own good!

Someone told me my heart is too big for this world. This isn’t the first time I’ve heard it. I’ve even clued into how it can stomp me to rock bottom. The way I see it is it’s a way of coping. I choose to believe there is good in everything and everyone. I choose to believe everything happens for a reason there for I end up making excuses for being miss treated or hurt. An example is my many toxic relationships I would always defend them all by making excuses like maybe they were traumatized or taught that is normal as a child. I know it’s not healthy and often opens the door to those who take advantage of people like me and feel no shame or guilt. I can’t be the only one with this self destructive belief?