Although @OP story sounds like he was made a good decision by invest his money when Bitcoin price was $17K since right now Bitcoin is worth $30K, anyone should remember if you bought Bitcoin at $69K, it doesn't mean you're wrong because the next Bitcoin ATH, it will surely break the $69K remark and the price will reach more higher. As long as you invest what you can afford to lose, you just need to be patient to wait the next ATH.