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 but naive and uninformed. First, try to know a thing or two about the bounty tokens you hunt. Some are huge gems and not worth dumping even in the next 6months. Second, always follow the news, they are technically what drive the price movements