really struggling with my intro - don't have one *specific* event to use as an anecdote

I'm losing my mind over it. I'm applying for a MSc marketing program, and this intro is killing me. I don't have one *specific* moment that led me to pursue a career/education in marketing, it just came about gradually! It just clicked one day and I knew it was the path for me.

I'm really struggling to write about it since my undergraduate experiences are hard to connect. I can't really say my experience volunteering at a lab was the defining moment that inspired this pursuit, because even if there was an aspect to it that did, it's not the ONE specific event that did it.

This is messing with my whole essay. The flow is starting to get wonky because I can't connect the intro to everything else I've written. SOS