I regret not holding BNB when the price is close to its ICO price so I only have a few right now and hopefully it will grow more even without a bull run because I see Binance make a lot of marketing with regards of their coin.
Every investor would say that when they had the chance, but we just can't predict the future so we should not blame ourselves.
We have to be thankful and satisfied if we make profit from selling it, and just look for another potential coin if we don't trust it to grow further again.