I don't know if I am cursed or something. If I sell a coin now from airdrop/bounty few days later that coins increases much that you will regret selling. If I hold a coin from airdrop/bounty again that coins price decreases much that you will regret not selling right away. I'm confused now whenever I sell the price increases and when I hold the price decreases. Am I cursed? 
You are not cursed, it only happens that you luck patience and you sell your coins at a very early stage, the market is based on supply and demand so obviously the price will always change based on the interest of investors.