My worst decision is that i haven't started collecting Bitcoins in 2012 if i did that. I would now have some extra money. In 2012 bitcoin was not so high so if you had bought 10 coins.
You would now have more money. I have now invested in bitcoin hoping that i can help my family with this income.
If you knew about bitcoin back then and did not invest in it, it can be the worst mistake of your life but you must not make it your regret. At least you are investing in it now. At that time, in 2012, bitcoin prices were very very cheap as compare to now. However, my biggest regret is I holded on bitcoin when it was sky high. I could have buy more during the downfall. I am not much of a trader so maybe that is why I did not do it.