I'd have not let my dad convince me all those years ago that 'coffee bags' were a crap idea.
They're readily available in France now - I'd have made a fortune.
Also, when I got made redundant in 2002, three of us put a lottery on the next day. All our numbers came up - on the "lottery extra" draw that they ran then, where you had to match all six. £310,000 I'd have had, the day after losing my job.
Still gutted, even though it spurred me on to do better things like I do now.