Oh my, where to start.It's easy to say I would have gone into something else - medicine or banking perhaps - but who knows what that would have been like. Consultancy has had its ups and downs, but so do other career paths. I think it's just difficult to plan a career these days. Looking back, I like to think I would have been more careful to choose a job that involves less travel and shorter hours - but then those were my early days and I didn't really have much choice I guess. Medicine and banking would have involved long hours in those early days, too. I think what I would have done differently is to have been far less loyal to companies during the first 5 years of my career. That same "prestigious" company I gave the best part of my early 20's to, working all hours of the day and night, and being shipped from one corner of the globe to another at a moment's notice, I would not have been loyal to. After all, when it suited their business, they thought nothing about summarily dismissing me on the basis that "they thought I didn't have what it took to move up to the next level". I should have taken them to an employment tribunal - it was a disguised redundancy (just ask the other 50 consultants they got rid of for similar reasons around the same time). I perhaps should have jumped ship the moment something with a better lifestyle came along. When I joined a smaller company, being loyal was the right thing to do. Sure they didn't pay as much as the other company - but they were decent people, doing an honest job, and trying (to at least some degree) to look after their staff.I would not have worked in an office full of foreigners staffed on temporary projects. That's not a xenophobic comment, what I'm saying is that I would have preferred to work in a team full of people who live and work locally, so that they have homes and families to go back to in the evenings. For the foreigners just "dropping by" for a 3 month stint, it made little difference whether they worked in the office until midnight or went back to a hotel room. In fact, if they stayed in the office, then they got a free take-away to eat in the boardroom and at least had some company. Furthermore, these short-term transient teams meant that they never really achieved full performance. It led to anxiety and constant issues around establishing effective working relationships and practices.As I've got older, I've managed to shed the transient teams and the killer hours. I'm now VERY firm with people about what sort of hours I'll do. I always get the job done - but I never sacrifice the team in the process. If some mug wants to stay in the office until midnight preparing a powerpoint deck that nobody will ever read, let alone appreciate (!), then that's up to them. I, on the other hand, will be at home watching "Terry and June" or suchlike. Tesco's don't give you an extra bag of shopping for nothing when you get to the checkout, so why should we give our clients an extra 5 hours for nothing every day?So I think the key thing here is: look after yourself. It's difficult when you're young - but at least try to enjoy a true work-life balance. By which I mean a balance according to a sensible person's definition, not the "firm" definition of "work-life balance = spending every hour of your life at work, balanced out by team drinks in the office on a Friday".Also, as you get older, do everything you can to look after and protect the younger staff. Imagine what it would have been like to have had somebody senior looking out for you when you started your career. As you get more senior yourself, then YOU become the person that can provide that support and protection to the younger ones. Look after them and do everything you can for them - they're our future, after all, and we need to give them a good example and the very best possible start.