I hate it when someone says ... , Then I would have done. ... When someone says that, I always remember the song If I had a Hammer, and start singing it to myself, when not yet fully uttered the phrase ... ... , Then I would have done. ... There is only one exception: when the phrase says a man who moved me a lot more of something, as I just started. ( then I broke the painful life, and showed that the experienced people, with their advice can save you a lot of time, nerves and money).