Just let it go, I came across bitcoin when it was valued at 5-6 Cents, I had spare $500 and wanted to long-term invest $100 into it, I even created my cold wall

Just let it go, I came across bitcoin when it was valued at 5-6 Cents, I had spare $500 and wanted to long-term invest $100 into it, I even created my cold wallet, But later it slipped off of my mind and I lost opportunity of having 1500+ BTC. Do I regret ?, I don't know. I just let it go.