It's never possible to eliminate all risk. However, there's a difference between taking a calculated risk, and being reckless -- and reckless people more often than not believe they were taking a calculated risk. This is especially true of people with gambler personality.
(Not making an opinion about original poster - I have no info to base an opinion on. Making a general statement)
Just quoting this because it deserves to be read twice.
It's also perhaps worth noting that yeah, I'm also not making any value judgements on the OP, except to say that sometimes, even calculated risks are subject to sheer and utter failure, and that even playing things extremely safe, unless one has piles and piles of money, could easily lead to bankruptcy-worthy situations.