When I finished my A-levels I was going to be a teacher, but I took a job in industry for the summer holidays (they didn't know I didn't plan to stay) and by Sept I was enjoying it, I'd been promoted and was earning good money, so I never went to Uni.
I am still with the same company 20 years later and have had a reasonably successful and rewarding career. They sponsored my p-t degree, so I could do a PGCE.
Since I had DS1 8 years ago, I've been working 2 days a week. 2 10/12 hour days plus commute and I enjoy it a lot, but there's no way I can do it full-time and unless I do, there will be no further progression for me. I just can't see a world where I am prepared to do those hours day in day out while I have a family at home and by the time they've gone, frankly I'll be almost retired.
I enjoy my job, but am a little frustrated when I see less capable full timers working above me and I can't see me doing the same job until I retire, so I've been considering having another look at my original career choice.
But, although I think I could be a decent teacher (have volunteered in school, with cubs and children's nature charity) I can't say I feel any desperate calling to do it. Before I get flamed, I really don't think it will be an easy option, My Mum and sister are teachers and I know the hours they put in, but they are at home in school hols and by around 5pm, even if they then work into the evening. On the days I work, I rarely see the DC's at all.