I'll answer that question but to make things more exciting, give away some satoshis to the best answers, that will be cool.
I bought Bitcoins in 2016 and in 2017 but I sold them because my parents suggested me to hold US dollars, which was a huge mistake of my life because I've sold so many coins that today I could easily be a millionaire. Since 2018, I started to collect every single satoshi and I've been buying and selling Bitcoin a few times throughout the last few years. I made another mistake in 2021 when I moved from Bitcoin to altcoins and started trading on the futures market. Since 2021, I have completely focused on holding and occasional trading and I'm glad I do it very well.