Let's hear you, how or where did you first discover Bitcoin? Did you mine on your laptops? Did you buy from MTGox or one of those early days trade platform's? And, most importantly, did you sell too soon? Or luckily, did you hodl till now?
None of those things really matters now as it won't make any difference if you had bought bitcoin earlier like in the very beginning or you bought during the march pandemic sell off that saw bitcoin trading below $5k. What really matters is how long would you be willing to hold onto the bitcoin you currently own. The future of the industry is very bright as you can see progress every year.
Institutional investors are currently making the space most entertaining as they're constantly pouring in funds into the industry through their investment. Sooner the price for f one bitcoin would be trading above$100k and that's a reality judging from the progress the industry is recording yearly.
Don't get pressured into taking decision that doesn't favour your investment strategy, you might have sold too early but that doesn't stop you from re-entering the market. The market is too young to back out so early, give it some time and you won't regret making that decision.