I do think about this question occasionally, there are a few key points in my life where I made decisions, and I'd love to know how different things might have been if I'd chosen a different path.
For example, when I first left school I went to Art College to study fashion, and I had some vague notion to go on to University to study stage costume and design, but for various reasons (mostly laziness I have to admit) I dropped out half way through my second year in college. I do occasionally wonder what life would have been like for me if I'd continued with that plan.
There are other 'crossroads' moments I wonder about - should I have finished my Psychology degree (told you I was lazy!), should I have been stronger and left my (now ex) husband when I first knew I wanted to and not waited 10 years (but then I'd never have met my fiance, or if I had he'd only have been 11!).
BUT then I consider that I have so many wonderful people and things in my life, and maybe going back and changing even my choice of socks on any given day might cause everything in the now to change, and I'm glad it's not possible. Still like to know if I might have ended up married to some famous actor and living a glamorous luvvie life though!!