Would I do anything differently? No. Most of the life-changing events in my life have been unplanned— and unwanted— and all I could do was make the best of them and move on. Speculating on what might be in the future is pointless, because even in the future most of the remaining life-changing events will be unplanned, right up until I die— the ultimate life-changing event.
There's an old saying, "Life is what happens when you're making other plans," and it's entirely true. With the exception of pre-planned events like marriage or retirement, most life-changing events will be unexpected, and all you an do is react to them. So why worry about it? Life happens no matter what you've planned.
Engineering: Finding complex solutions to simple problems you didn't even know you had.