Who would say The process of learning to place others before myself was very difficult but worthwhile?

Someone who has undergone a significant personal transformation focused on selflessness and empathy would likely say this. This could be:

* A recovering narcissist or someone with a similar personality disorder: Their journey involves learning to consider others' needs.

* Someone who has overcome extreme self-centeredness: This could be due to difficult childhood experiences, trauma, or simply a long period of prioritizing personal gain above all else.

* A person who has dedicated their life to service or altruism: A missionary, a social worker, or a volunteer working with vulnerable populations might reflect on this process.

* Someone who has experienced a significant life event that shifted their perspective: A near-death experience, a major loss, or a moment of profound realization could lead to this change.

Essentially, anyone who has consciously and deliberately worked to overcome self-centeredness and prioritize the well-being of others could make this statement.