I have a better life because I travelled.
I grew up being pressured to leave school as soon as legally possible, and get a job in a shop, marry young, and be a SAHM on a low income generated by a husband in a low-paid manual job. That is what I saw all around me, in a deep recession with high unemployment and a lot of poverty, and no expectation a girl would have a career. Some core of stubbornness made me sign up with an au pair agency without telling anyone at 18, and apply for a passport. Those few months living in another culture, around people living utterly different lives to anything I'd ever seen, speaking a different language, coping and thriving by myself, made me realise there was a whole world out there I had thought existed only in the realm of fiction.
If I hadn't travelled, I would have lived the life I saw all round me, that I was intended to have, a life of low expectations, in the same few square miles of the city where my family always lived, doing the same lowpaid jobs or housework, because I wouldn't have known anything else existed.
You have to know other ways of living are possible in order to want them. This was the 80s, so pre-internet, more difficult to know about other ways of life. I had absolutely no idea I was clever, or that I had a gift for languages, or that I would thrive at university, go on to win postgrad scholarships, make lifelong friends from very different backgrounds, live in lots of other countries, and by doing these things make them possible for my younger siblings, too.